[Object][test] - Remove readobj-elf-versioning.test and support files.

`readobj-elf-versioning.test` was added in rL152436 and
checks how llvm-readobj --dyn-syms prints versioned symbols.
We test the same in `llvm-readobj\ELF\dyn-symbols.test` currently.

This patch removes the test and 4 more support files from Inputs.

Differential revision: https://reviews.llvm.org/D73163