[AArch64][AsmParser] Remove SVE and SVE2 from ARMTargetParser

[c-rhodes]

Summary

Patch removes SVE and SVE2 features from ARMTargetParser as these
features are not supported on ARM.

[rengolin]

Right, ArchExtKind was supposed to be shared between Arm and AArch64, but that ship has sailed a long time ago. LGTM, thanks!

[c-rhodes]

In D65385#1604643, @rengolin wrote:

Right, ArchExtKind was supposed to be shared between Arm and AArch64, but that ship has sailed a long time ago. LGTM, thanks!

np, thx for reviewing!

include/llvm/Support/ARMTargetParser.h

enum ArchExtKind : unsigned {
   AEK_HWDIVARM =    1 << 5,
   AEK_MP =          1 << 6,
   AEK_SIMD =        1 << 7,
   AEK_SEC =         1 << 8,
   AEK_VIRT =        1 << 9,
   AEK_DSP =         1 << 10,
   AEK_FP16 =        1 << 11,
   AEK_RAS =         1 << 12,
-  AEK_SVE =         1 << 13,
-  AEK_DOTPROD =     1 << 14,
-  AEK_SHA2    =     1 << 15,
-  AEK_AES     =     1 << 16,
-  AEK_FP16FML =     1 << 17,
-  AEK_SB      =     1 << 18,
-  AEK_SVE2 =        1 << 19,
-  AEK_SVE2AES =     1 << 20,
-  AEK_SVE2SM4 =     1 << 21,
-  AEK_SVE2SHA3 =    1 << 22,
-  AEK_SVE2BITPERM = 1 << 23,
-  AEK_FP_DP   =     1 << 24,
-  AEK_LOB     =     1 << 25,
+  AEK_DOTPROD =     1 << 13,
+  AEK_SHA2    =     1 << 14,
+  AEK_AES     =     1 << 15,
+  AEK_FP16FML =     1 << 16,
+  AEK_SB      =     1 << 17,
+  AEK_FP_DP   =     1 << 18,
+  AEK_LOB     =     1 << 19,
   // Unsupported extensions.
   AEK_OS = 0x8000000,
   AEK_IWMMXT = 0x10000000,
   AEK_IWMMXT2 = 0x20000000,
   AEK_MAVERICK = 0x40000000,
   AEK_XSCALE = 0x80000000,
 };