Revert "[CodeGen] [SelectionDAG] More efficient code for X % C == 0 (UREM case) (try 2)"

*Appears* to break test-suite on
http://lab.llvm.org:8011/builders/clang-cmake-x86_64-sde-avx512-linux/builds/23790

FAIL: burg.execution_time
FAIL: spiff.execution_time
FAIL: employ.execution_time
FAIL: llu.execution_time
FAIL: gramschmidt.execution_time
FAIL: fdtd-apml.execution_time

This reverts commit r364563.

llvm-svn: 364568