[profcheck] Remove test cases fixed in #168161 from xfail list. (#170787)

The expected failed test cases 
```
  Transforms/ExpandVariadics/expand-va-intrinsic-split-linkage.ll
  Transforms/ExpandVariadics/expand-va-intrinsic-split-simple.ll
  Transforms/ExpandVariadics/intrinsics.ll
```
have been fixed by #168161.

Co-authored-by: Jin Huang <[email protected]>

Author: jinhuang1102

llvm/utils/profcheck-xfail.txt

@@ -143,9 +143,6 @@ Transforms/ExpandLargeFpConvert/X86/expand-large-fp-convert-fptosi129.ll
 Transforms/ExpandLargeFpConvert/X86/expand-large-fp-convert-fptoui129.ll
 Transforms/ExpandLargeFpConvert/X86/expand-large-fp-convert-si129tofp.ll
 Transforms/ExpandLargeFpConvert/X86/expand-large-fp-convert-ui129tofp.ll
-Transforms/ExpandVariadics/expand-va-intrinsic-split-linkage.ll
-Transforms/ExpandVariadics/expand-va-intrinsic-split-simple.ll
-Transforms/ExpandVariadics/intrinsics.ll
 Transforms/FixIrreducible/basic.ll
 Transforms/FixIrreducible/bug45623.ll
 Transforms/FixIrreducible/callbr.ll