[binutils-gdb] Remove file and line from struct complain

[sergiodj+buildbot@sergiodj.net]

*** TEST RESULTS FOR COMMIT 7ff8817441fcebe3d32343dbd9d514366bfe8e23 ***

Author: Tom Tromey <tom@tromey.com>
Branch: master
Commit: 7ff8817441fcebe3d32343dbd9d514366bfe8e23

Remove file and line from struct complain

The file and line handling in complaints.c wasn't used once
internal_complaint was removed.  This patch removes all the related
code.

gdb/ChangeLog
2018-05-23  Tom Tromey  <tom@tromey.com>

	* complaints.c (struct complain) <file, line>: Remove.
	(find_complaint): Remove file, line parameters.
	(complaint_internal): Update.