Revert "[libc][math][c23] Fix X86_Binary80 special cases for canonicalize functions. (#86924)"

This reverts commit 7c1c07c9.

Fails in presubmit.

Link: https://lab.llvm.org/buildbot/#/builders/90/builds/67461
Link: https://lab.llvm.org/buildbot/#/builders/225/builds/33519
Link: https://lab.llvm.org/buildbot/#/builders/163/builds/53858
Link: https://lab.llvm.org/buildbot/#/builders/250/builds/20983
Link: #86924