portable: remove stray installer URL from IAR TrustZone non-secure ports

A stray IAR installer download URL was left outside the comment delimiters
in the restore_special_regs section of the IAR TrustZone non-secure ports.
The assembler parses the bare URL as an operand of the preceding ldmia, so
any build of these ports aborts with:

    Error: garbage following instruction -- 'ldmia r2!,{r0,r3,lr} http:'

The line is outside the configENABLE_PAC conditional block, so it breaks
every configuration of the port, not only PAC-enabled builds.

Commit 78e0cc7 ("ARMv8.1-M: Add task dedicated PAC key support", #1195)
introduced the URL in the CM33/CM35P/CM55/CM85 and ARMv8M non-secure
ports. The CM52 (#1334) and STAR-MC3 (#1363) ports inherited it when
their portasm.s was created from an already-affected file.

The stray URL is removed rather than moved inside the comment, matching
the unaffected sibling port ARM_CM23/non_secure/portasm.s, which carries
the same comment text without any URL.

Verified with arm-none-eabi-gcc 13.3.1: all six files fail to assemble
before the change and assemble cleanly after it.

Relates to #1480. The ARM_CM33 non-secure port is handled separately by
#1485, so it is intentionally not touched here.

portable/ARMv8M/non_secure/portable/IAR/ARM_CM33/portasm.s

@@ -473,7 +473,7 @@ PendSV_Handler:
         msr  PAC_KEY_P_0, r6
         clrm {r3-r6}                        /* Clear r3-r6. */
     #endif /* configENABLE_PAC */
-        ldmia r2!, {r0, r3, lr}             http://files.iar.com/ftp/pub/box/bxarm-9.60.3.deb/* Read from stack - r0 = xSecureContext, r3 = PSPLIM and LR restored. */
+        ldmia r2!, {r0, r3, lr}             /* Read from stack - r0 = xSecureContext, r3 = PSPLIM and LR restored. */
         msr psplim, r3                      /* Restore the PSPLIM register value for the task. */
         ldr r3, =xSecureContext             /* Read the location of xSecureContext i.e. &( xSecureContext ). */
         str r0, [r3]                        /* Restore the task's xSecureContext. */

portable/IAR/ARM_CM35P/non_secure/portasm.s

@@ -473,7 +473,7 @@ PendSV_Handler:
         msr  PAC_KEY_P_0, r6
         clrm {r3-r6}                        /* Clear r3-r6. */
     #endif /* configENABLE_PAC */
-        ldmia r2!, {r0, r3, lr}             http://files.iar.com/ftp/pub/box/bxarm-9.60.3.deb/* Read from stack - r0 = xSecureContext, r3 = PSPLIM and LR restored. */
+        ldmia r2!, {r0, r3, lr}             /* Read from stack - r0 = xSecureContext, r3 = PSPLIM and LR restored. */
         msr psplim, r3                      /* Restore the PSPLIM register value for the task. */
         ldr r3, =xSecureContext             /* Read the location of xSecureContext i.e. &( xSecureContext ). */
         str r0, [r3]                        /* Restore the task's xSecureContext. */

portable/IAR/ARM_CM52/non_secure/portasm.s

@@ -473,7 +473,7 @@ PendSV_Handler:
         msr  PAC_KEY_P_0, r6
         clrm {r3-r6}                        /* Clear r3-r6. */
     #endif /* configENABLE_PAC */
-        ldmia r2!, {r0, r3, lr}             http://files.iar.com/ftp/pub/box/bxarm-9.60.3.deb/* Read from stack - r0 = xSecureContext, r3 = PSPLIM and LR restored. */
+        ldmia r2!, {r0, r3, lr}             /* Read from stack - r0 = xSecureContext, r3 = PSPLIM and LR restored. */
         msr psplim, r3                      /* Restore the PSPLIM register value for the task. */
         ldr r3, =xSecureContext             /* Read the location of xSecureContext i.e. &( xSecureContext ). */
         str r0, [r3]                        /* Restore the task's xSecureContext. */

portable/IAR/ARM_CM55/non_secure/portasm.s

@@ -473,7 +473,7 @@ PendSV_Handler:
         msr  PAC_KEY_P_0, r6
         clrm {r3-r6}                        /* Clear r3-r6. */
     #endif /* configENABLE_PAC */
-        ldmia r2!, {r0, r3, lr}             http://files.iar.com/ftp/pub/box/bxarm-9.60.3.deb/* Read from stack - r0 = xSecureContext, r3 = PSPLIM and LR restored. */
+        ldmia r2!, {r0, r3, lr}             /* Read from stack - r0 = xSecureContext, r3 = PSPLIM and LR restored. */
         msr psplim, r3                      /* Restore the PSPLIM register value for the task. */
         ldr r3, =xSecureContext             /* Read the location of xSecureContext i.e. &( xSecureContext ). */
         str r0, [r3]                        /* Restore the task's xSecureContext. */

portable/IAR/ARM_CM85/non_secure/portasm.s

@@ -473,7 +473,7 @@ PendSV_Handler:
         msr  PAC_KEY_P_0, r6
         clrm {r3-r6}                        /* Clear r3-r6. */
     #endif /* configENABLE_PAC */
-        ldmia r2!, {r0, r3, lr}             http://files.iar.com/ftp/pub/box/bxarm-9.60.3.deb/* Read from stack - r0 = xSecureContext, r3 = PSPLIM and LR restored. */
+        ldmia r2!, {r0, r3, lr}             /* Read from stack - r0 = xSecureContext, r3 = PSPLIM and LR restored. */
         msr psplim, r3                      /* Restore the PSPLIM register value for the task. */
         ldr r3, =xSecureContext             /* Read the location of xSecureContext i.e. &( xSecureContext ). */
         str r0, [r3]                        /* Restore the task's xSecureContext. */

portable/IAR/ARM_STAR_MC3/non_secure/portasm.s

@@ -473,7 +473,7 @@ PendSV_Handler:
         msr  PAC_KEY_P_0, r6
         clrm {r3-r6}                        /* Clear r3-r6. */
     #endif /* configENABLE_PAC */
-        ldmia r2!, {r0, r3, lr}             http://files.iar.com/ftp/pub/box/bxarm-9.60.3.deb/* Read from stack - r0 = xSecureContext, r3 = PSPLIM and LR restored. */
+        ldmia r2!, {r0, r3, lr}             /* Read from stack - r0 = xSecureContext, r3 = PSPLIM and LR restored. */
         msr psplim, r3                      /* Restore the PSPLIM register value for the task. */
         ldr r3, =xSecureContext             /* Read the location of xSecureContext i.e. &( xSecureContext ). */
         str r0, [r3]                        /* Restore the task's xSecureContext. */