[WebAssembly] Remove expected failure from known_gcc_test_failures.txt.  NFC.

Differential Revision: https://reviews.llvm.org/D56809

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@351388 91177308-0d34-0410-b5e6-96231b3b80d8
diff --git a/lib/Target/WebAssembly/known_gcc_test_failures.txt b/lib/Target/WebAssembly/known_gcc_test_failures.txt
index 364c871..a379567 100644
--- a/lib/Target/WebAssembly/known_gcc_test_failures.txt
+++ b/lib/Target/WebAssembly/known_gcc_test_failures.txt
@@ -75,7 +75,6 @@
 920501-3.c
 920728-1.c
 pr28865.c
-widechar-2.c
 attr-alias-1.C
 attr-alias-2.C
 attr-ifunc-1.C