Revert "modpost: Add .irqentry.text to OTHER_SECTIONS"

This reverts commit 7ff5af6b which is
commit 79124056 upstream.

It is not needed and must be reverted due to a dependant patch that must
be reverted as well.

Bug: 161946584
Change-Id: I552285c26a13bceacdd35c56c75be7a652db3870
Signed-off-by: Greg Kroah-Hartman <gregkh@google.com>