Revert "[XRay][Arm] Repair XRay table emission on Arm32 and add tests to...

Revert "[XRay][Arm] Repair XRay table emission on Arm32 and add tests to identify such problem earlier"

This reverts commit r292210, as it broke the Thumb buldbot with:

clang-5.0: error: the clang compiler does not support '-fxray-instrument
on thumbv7-unknown-linux-gnueabihf'.

llvm-svn: 292357