[ELF][test] Fix several LLD ICF tests

A number of the ICF tests were not updated to use --print-icf-sections
instead of --verbose and various '-NOT' checks were not updated to the
latest output format of --print-icf-sections. Because these are all
'negative' tests, these issues have gone unnoticed.

Differential Revision: https://reviews.llvm.org/D110353