WebAssembly: update expected torture test failures

r261457 handles CopyToReg nodes with flag results in LowerCopyToReg, which was causing the SelectionDAGNodes assert.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@261479 91177308-0d34-0410-b5e6-96231b3b80d8

Author: jfbastien

lib/Target/WebAssembly/known_gcc_test_failures.txt

@@ -20,10 +20,6 @@ va-arg-22.c
 920908-1.c
 pr38151.c
 
-# SelectionDAGNodes.h:943: llvm::SDValue::SDValue(llvm::SDNode *, unsigned int): Assertion `(!Node || ResNo < Node->getNumValues()) && "Invalid result number for the given node!"' failed.
-pr53645.c
-pr53645-2.c
-
 # multiple-entry loops are not supported yet.
 pr38051.c