Revert "[SVE2.1][Clang][LLVM]Add BFloat16 builtin in Clang and LLVM intrinisc (#70362)"

This reverts commit f79676a.

Author: omjavaid

clang/include/clang/Basic/arm_sve.td

@@ -2039,23 +2039,7 @@ def SVCNTP_COUNT : SInst<"svcntp_{d}", "n}i", "QcQsQiQl", MergeNone, "aarch64_sv
 defm SVREVD : SInstZPZ<"svrevd", "csilUcUsUiUl", "aarch64_sve_revd">;
 }
 
-
-let TargetGuard = "sve2p1,b16b16" in {
-defm SVMUL_BF  : SInstZPZZ<"svmul",  "b", "aarch64_sve_fmul",   "aarch64_sve_fmul_u">;
-defm SVADD_BF  : SInstZPZZ<"svadd",  "b", "aarch64_sve_fadd",   "aarch64_sve_fadd_u">;
-defm SVSUB_BF  : SInstZPZZ<"svsub",  "b", "aarch64_sve_fsub",   "aarch64_sve_fsub_u">;
-defm SVMAXNM_BF  : SInstZPZZ<"svmaxnm","b", "aarch64_sve_fmaxnm", "aarch64_sve_fmaxnm_u">;
-defm SVMINNM_BF  : SInstZPZZ<"svminnm","b", "aarch64_sve_fminnm", "aarch64_sve_fminnm_u">;
-defm SVMAX_BF    : SInstZPZZ<"svmax",  "b", "aarch64_sve_fmax",   "aarch64_sve_fmax_u">;
-defm SVMIN_BF    : SInstZPZZ<"svmin",  "b", "aarch64_sve_fmin",   "aarch64_sve_fmin_u">;
-defm SVMLA_BF  : SInstZPZZZ<"svmla",  "b", "aarch64_sve_fmla",  "aarch64_sve_fmla_u", []>;
-defm SVMLS_BF  : SInstZPZZZ<"svmls",  "b", "aarch64_sve_fmls",  "aarch64_sve_fmls_u", []>;
-def SVMLA_LANE_BF  : SInst<"svmla_lane[_{d}]",  "ddddi",  "b", MergeNone, "aarch64_sve_fmla_lane", [], [ImmCheck<3, ImmCheckLaneIndex, 2>]>;
-def SVMLS_LANE_BF  : SInst<"svmls_lane[_{d}]",  "ddddi",  "b", MergeNone, "aarch64_sve_fmls_lane", [], [ImmCheck<3, ImmCheckLaneIndex, 2>]>;
-def SVMUL_LANE_BF  : SInst<"svmul_lane[_{d}]", "dddi", "b", MergeNone, "aarch64_sve_fmul_lane", [], [ImmCheck<2, ImmCheckLaneIndex, 1>]>;
-def SVFCLAMP_BF   : SInst<"svclamp[_{d}]", "dddd", "b", MergeNone, "aarch64_sve_fclamp", [], []>;
-} //sve2p1,b16b16
-
+////////////////////////////////////////////////////////////////////////////////
 // SME2
 
 // SME intrinsics which operate only on vectors and do not require ZA should be added here,