Removing these tests from skip list because corresponding wasm simd
opcodes lowering has been implemented.

Change-Id: I77bbbee573ba65cf27dc9ee39f4d352bafb5849f
Reviewed-on: https://chromium-review.googlesource.com/988032Reviewed-by: Clemens Hammacher <clemensh@chromium.org>
Reviewed-by: Michael Achenbach <machenbach@chromium.org>
Commit-Queue: Ivica Bogosavljevic <ivica.bogosavljevic@mips.com>
Cr-Commit-Position: refs/heads/master@{#52383}