Riscv re-factoring (#1145)

* Refactor the trap handler macro
Since `portasmHANDLE_INTERRUPT` is removed at FreeRTOS-kernel, Riscv re-factoring (#444) (commit: 9efca75d1e)
We don't need this definition anymore
We also remove the unused function definition

* Styling the file header to pass the checker
Remove an extra space

Co-authored-by: ztex <ztex030640417@gmail.com>

FreeRTOS/Demo/RISC-V_RV32_QEMU_VIRT_GCC/build/gcc/Makefile

@@ -13,7 +13,7 @@ MAKE = make
 GCC_VERSION = $(shell $(CC) --version | grep ^$(CC) | sed 's/^.* //g' | awk -F. '{ printf("%d%02d%02d"), $$1, $$2, $$3 }')
 GCC_VERSION_NEED_ZICSR = "110100"
 
-CFLAGS += $(INCLUDE_DIRS) -DportasmHANDLE_INTERRUPT=handle_trap -fmessage-length=0 \
+CFLAGS += $(INCLUDE_DIRS) -fmessage-length=0 \
           -mabi=ilp32 -mcmodel=medlow -ffunction-sections -fdata-sections \
           -Wno-unused-parameter -nostartfiles -g3 -Os
 

FreeRTOS/Demo/RISC-V_RV32_QEMU_VIRT_GCC/riscv-virt.c

@@ -56,9 +56,3 @@ size_t i;
 
 	portEXIT_CRITICAL();
 }
-
-void handle_trap(void)
-{
-	while (1)
-		;
-}