- Fix build on MIPS by remiving non-existent, unused include

Upstream issue: https://bugreports.qt-project.org/browse/QTBUG-43486

PR:		196157
Submitted by:	amdmi3
Approved by:	rakuco


git-svn-id: svn+ssh://svn.freebsd.org/ports/head@375385 35697150-7ecd-e111-bb59-0022644237b5