[WebAssembly] Remove catch_all from AsmParser

Summary:
`catch_all` is from the first version of EH proposal and now has been
removed. There were no tests covering this, and thus no tests to remove
or fix.

Reviewers: aardappel

Subscribers: dschuff, sbc100, jgravelle-google, sunfish, llvm-commits

Tags: #llvm

Differential Revision: https://reviews.llvm.org/D63737

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@364360 91177308-0d34-0410-b5e6-96231b3b80d8
diff --git a/lib/Target/WebAssembly/AsmParser/WebAssemblyAsmParser.cpp b/lib/Target/WebAssembly/AsmParser/WebAssemblyAsmParser.cpp
index 44136b6..89dd3d8 100644
--- a/lib/Target/WebAssembly/AsmParser/WebAssemblyAsmParser.cpp
+++ b/lib/Target/WebAssembly/AsmParser/WebAssemblyAsmParser.cpp
@@ -433,10 +433,6 @@
       if (pop(BaseName, Try))
         return true;
       push(Try);
-    } else if (BaseName == "catch_all") {
-      if (pop(BaseName, Try))
-        return true;
-      push(Try);
     } else if (BaseName == "end_if") {
       if (pop(BaseName, If, Else))
         return true;