Revert "objtool: Warn on functions with ambiguous -ffunction-sections section names"

Revert "objtool: Warn on functions with ambiguous -ffunction-sections section names"

This reverts commit 9c7dc1dd897a1cdcade9566ea4664b03fbabf4a4.

The check-function-names.sh script now provides the function name
checking functionality for all architectures, making the objtool check
redundant.

Signed-off-by: Josh Poimboeuf <jpoimboe@kernel.org>
Signed-off-by: Peter Zijlstra (Intel) <peterz@infradead.org>
Acked-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Link: https://patch.msgid.link/c7d549d4de8bd1490d106b99630eea5efc69a4dd.1763669451.git.jpoimboe@kernel.org