Automerge: Revert "[AArch64][SVE] Use FeatureUseFixedOverScalableIfEqualCost for A510 and A520" (#134382)

Reverts llvm/llvm-project#132246

Author: nasherm

llvm/lib/Target/AArch64/AArch64Processors.td

@@ -723,7 +723,6 @@ def ProcessorFeatures {
                                  FeatureSB, FeaturePAuth, FeatureSSBS, FeatureSVE, FeatureSVE2,
                                  FeatureComplxNum, FeatureCRC, FeatureDotProd,
                                  FeatureFPARMv8,FeatureFullFP16, FeatureJS, FeatureLSE,
-                                 FeatureUseFixedOverScalableIfEqualCost,
                                  FeatureRAS, FeatureRCPC, FeatureRDM];
   list<SubtargetFeature> A520 = [HasV9_2aOps, FeaturePerfMon, FeatureAM,
                                  FeatureMTE, FeatureETE, FeatureSVEBitPerm,
@@ -733,7 +732,6 @@ def ProcessorFeatures {
                                  FeatureSVE, FeatureSVE2, FeatureBF16, FeatureComplxNum, FeatureCRC,
                                  FeatureFPARMv8, FeatureFullFP16, FeatureMatMulInt8, FeatureJS,
                                  FeatureNEON, FeatureLSE, FeatureRAS, FeatureRCPC, FeatureRDM,
-                                 FeatureUseFixedOverScalableIfEqualCost,
                                  FeatureDotProd];
   list<SubtargetFeature> A520AE = [HasV9_2aOps, FeaturePerfMon, FeatureAM,
                                  FeatureMTE, FeatureETE, FeatureSVEBitPerm,