Remove assert introduced in #71098

This should effectively preserve the old behavior for non-HLSL code.

Author: llvm-beanz

clang/lib/CodeGen/CGExprScalar.cpp

@@ -2425,8 +2425,6 @@ Value *ScalarExprEmitter::VisitCastExpr(CastExpr *CE) {
   case CK_IntegralToFloating: {
     if (E->getType()->isVectorType() && DestTy->isVectorType()) {
       // TODO: Support constrained FP intrinsics.
-      assert(!Builder.getIsFPConstrained() &&
-             "FP Constrained vector casts not supported yet.");
       QualType SrcElTy = E->getType()->castAs<VectorType>()->getElementType();
       if (SrcElTy->isSignedIntegerOrEnumerationType())
         return Builder.CreateSIToFP(Visit(E), ConvertType(DestTy), "conv");
@@ -2439,8 +2437,6 @@ Value *ScalarExprEmitter::VisitCastExpr(CastExpr *CE) {
   case CK_FloatingToIntegral: {
     if (E->getType()->isVectorType() && DestTy->isVectorType()) {
       // TODO: Support constrained FP intrinsics.
-      assert(!Builder.getIsFPConstrained() &&
-             "FP Constrained vector casts not supported yet.");
       QualType DstElTy = DestTy->castAs<VectorType>()->getElementType();
       if (DstElTy->isSignedIntegerOrEnumerationType())
         return Builder.CreateFPToSI(Visit(E), ConvertType(DestTy), "conv");
@@ -2453,8 +2449,6 @@ Value *ScalarExprEmitter::VisitCastExpr(CastExpr *CE) {
   case CK_FloatingCast: {
     if (E->getType()->isVectorType() && DestTy->isVectorType()) {
       // TODO: Support constrained FP intrinsics.
-      assert(!Builder.getIsFPConstrained() &&
-             "FP Constrained vector casts not supported yet.");
       QualType SrcElTy = E->getType()->castAs<VectorType>()->getElementType();
       QualType DstElTy = DestTy->castAs<VectorType>()->getElementType();
       if (DstElTy->castAs<BuiltinType>()->getKind() <