Revert "[AMDGPU][True16] set true16 mode as default on gfx110x (llvm#140736)"

rocALUTION build fails

This reverts commit 04eaf61.

Author: ronlieb

llvm/lib/Target/AMDGPU/AMDGPU.td

@@ -1800,8 +1800,7 @@ def FeatureISAVersion11_0_Common : FeatureSet<
     [FeatureMSAALoadDstSelBug,
      FeatureVALUTransUseHazard,
      FeatureMADIntraFwdBug,
-     FeaturePrivEnabledTrap2NopBug,
-     FeatureRealTrue16Insts])>;
+     FeaturePrivEnabledTrap2NopBug])>;
 
 def FeatureISAVersion11_0_0 : FeatureSet<
   !listconcat(FeatureISAVersion11_0_Common.Features,