Merging r354733:

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r354733 | nikic | 2019-02-23 19:59:01 +0100 (Sat, 23 Feb 2019) | 10 lines

[WebAssembly] Fix select of and (PR40805)

Fixes https://bugs.llvm.org/show_bug.cgi?id=40805 introduced by
patterns added in D53676.

I'm removing the patterns entirely here, as they are not correct
in the general case. If necessary something more specific can be
added in the future.

Differential Revision: https://reviews.llvm.org/D58575
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llvm-svn: 354860