Remove 32-bit clang build from Travis (#4100)
Remove 32-bit clang build from Travis (#4100)

The 32-bit clang build does not provide much value, since most
clang-only warnings show up in the 64-bit build.  We remove the 32-bit
here to save Travis resources.
AmesianX/dynamorio,AmesianX/dynamorio,AmesianX/dynamorio,AmesianX/dynamorio,AmesianX/dynamorio