sci_get_line_from_position() can be used instead and it's clearer.
Remove unused sci_get_line_end_styled() - it's also the same as
sci_get_line_from_position().


git-svn-id: https://geany.svn.sourceforge.net/svnroot/geany/trunk@1904 ea778897-0a13-0410-b9d1-a72fbfd435f5