Bug 1358593 - Use simple string matching in crossreference_error_lines
Bug 1358593 - Use simple string matching in crossreference_error_lines

The regexp for matching lines started off somewhat complex but ended
up just being equivalent to str.endswith(). Therefore using re is just
unnecessary overhead.

tojonmz/treeherder,tojonmz/treeherder,KWierso/treeherder,KWierso/treeherder,tojon/treeherder,tojonmz/treeherder,tojonmz/treeherder,tojon/treeherder,edmorley/treeherder,KWierso/treeherder,edmorley/treeherder,KWierso/treeherder,tojonmz/treeherder,edmorley/treeherder,edmorley/treeherder,tojonmz/treeherder,tojon/treeherder,tojon/treeherder