[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
1 file changed