configure: Delete an obsolete, unused toolchain reference

'arm946cc' was only used by the never-finished 'tcc77x' targets that
were removed from the tree in 3ba2f6e5c7 (April 2021)

Change-Id: I935847ec9d339b8e90c6d2362113c2ff94b8b20f

firmware/target/arm/imx233/power-imx233.c

@@ -510,7 +510,7 @@ struct imx233_power_info_t imx233_power_get_info(unsigned flags)
         [BV_POWER_MISC_FREQSEL__20MHz] = 20000,
         [BV_POWER_MISC_FREQSEL__24MHz] = 24000,
         [BV_POWER_MISC_FREQSEL__19p2MHz] = 19200,
-        [BV_POWER_MISC_FREQSEL__14p4MHz] = 14200,
+        [BV_POWER_MISC_FREQSEL__14p4MHz] = 14400,
         [BV_POWER_MISC_FREQSEL__18MHz] = 18000,
         [BV_POWER_MISC_FREQSEL__21p6MHz] = 21600,
         [BV_POWER_MISC_FREQSEL__17p28MHz] = 17280,

tools/configure

@@ -579,13 +579,6 @@ arm940tcc () {
  endian="little"
 }
 
-arm946cc () {
- findarmgcc
- GCCOPTS="$CCOPTS -mcpu=arm9e"
- GCCOPTIMIZE="-fomit-frame-pointer"
- endian="little"
-}
-
 arm926ejscc () {
  findarmgcc
  GCCOPTS="$CCOPTS -mcpu=arm926ej-s"