Revert a part of "Add/Improve complex, vector, aggregate types handling for...

Revert a part of "Add/Improve complex, vector, aggregate types handling for SysV ARM (hard/soft) ABI."

This partially reverts commit r262218.

The commit added additional checks to a test case. The test case is too big so it's not feasible
to XFAIL it completely. Suggest to implement the checks as a separate test case, which can then
be XFAILed more surgically.

llvm-svn: 262223