Revert "[AArch64] Add intrinsics for multi-vector to ZA array vector accumulators" (#91597)

Reverts #88266  due to test failures

error: 'expected-error' diagnostics seen but not expected: 
(frontend): '-fsyntax-only' action ignored; '-emit-llvm' action
specified previously

Author: momchil-velikov

clang/include/clang/Basic/arm_sme.td

@@ -298,16 +298,6 @@ multiclass ZAAddSub<string n_suffix> {
     def NAME # _ZA64_VG1X2_F64 : Inst<"sv" # n_suffix # "_za64[_{d}]_vg1x2", "vm2", "d", MergeNone, "aarch64_sme_" # n_suffix # "_za64_vg1x2", [IsStreaming, IsInOutZA], []>;
     def NAME # _ZA64_VG1X4_F64 : Inst<"sv" # n_suffix # "_za64[_{d}]_vg1x4", "vm4", "d", MergeNone, "aarch64_sme_" # n_suffix # "_za64_vg1x4", [IsStreaming, IsInOutZA], []>;
   }
-
-  let TargetGuard = "sme-f16f16|sme-f8f16" in {
-    def NAME # _ZA16_VG1X2_F16 : Inst<"sv" # n_suffix # "_za16[_{d}]_vg1x2", "vm2", "h", MergeNone, "aarch64_sme_" # n_suffix # "_za16_vg1x2", [IsStreaming, IsInOutZA], []>;
-    def NAME # _ZA16_VG1X4_F16 : Inst<"sv" # n_suffix # "_za16[_{d}]_vg1x4", "vm4", "h", MergeNone, "aarch64_sme_" # n_suffix # "_za16_vg1x4", [IsStreaming, IsInOutZA], []>;
-  }
-
-  let TargetGuard = "sme2,b16b16" in {
-    def NAME # _ZA16_VG1X2_BF16 : Inst<"sv" # n_suffix # "_za16[_{d}]_vg1x2", "vm2", "b", MergeNone, "aarch64_sme_" # n_suffix # "_za16_vg1x2", [IsStreaming, IsInOutZA], []>;
-    def NAME # _ZA16_VG1X4_BF16 : Inst<"sv" # n_suffix # "_za16[_{d}]_vg1x4", "vm4", "b", MergeNone, "aarch64_sme_" # n_suffix # "_za16_vg1x4", [IsStreaming, IsInOutZA], []>;
-  }
 }
 
 defm SVADD : ZAAddSub<"add">;

clang/test/CodeGen/aarch64-sme2-intrinsics/acle_sme2_add_sub_za16.c

@@ -3481,7 +3481,7 @@ let TargetPrefix = "aarch64" in {
   // Multi-vector add/sub and accumulate into ZA
   //
   foreach intr = ["add", "sub"] in {
-    foreach za = ["za16","za32", "za64"] in {
+    foreach za = ["za32", "za64"] in {
       def int_aarch64_sme_ # intr # _ # za # _vg1x2 : SME2_ZA_Write_VG2_Intrinsic;
       def int_aarch64_sme_ # intr # _ # za # _vg1x4 : SME2_ZA_Write_VG4_Intrinsic;
     }