academic/octave: Remove Qt4 support

Signed-off-by: Kyle Guinn <elyk03@gmail.com>

academic/octave/README

@@ -20,12 +20,6 @@ amd, camd, colamd, ccolamd, cholmod, umfpack, cxsparse, glpk, arpack-ng,
 qrupdate, sundials, qhull, hdf5, fltk, ftgl, gl2ps, jdk, GraphicsMagick,
 portaudio.
 
-Octave can use either Qt4 or Qt5, and it will select Qt5 if both are
-installed.  You can force it to use a particular version by passing QT=4 or
-QT=5 to the script.  If Qt5 is selected and it does not find a Qt5 version of
-QScintilla, then the editor window in the GUI will be disabled.  If you need
-the editor window and have both Qt versions installed, force it to use Qt4.
-
 Octave can use ImageMagick (part of Slackware) or GraphicsMagick (available
 from SBo) for image-reading functionality.  If both are installed,
 GraphicsMagick will be selected by default, since ImageMagick is not

academic/octave/octave.SlackBuild

@@ -74,12 +74,6 @@ if [ -n "$MAGICK" ]; then
   MAGICK="--with-magick=$MAGICK"
 fi
 
-# Allow forcing a particular version of Qt.  Set QT=4 or QT=5.
-# If unset, Octave will decide, and it prefers version 5.
-if [ -n "$QT" ]; then
-  QT="--with-qt=$QT"
-fi
-
 set -e
 
 rm -rf $PKG
@@ -116,7 +110,6 @@ find . -name stamp-vti -exec touch {} +
   --disable-dependency-tracking \
   --with-openssl=auto \
   ${MAGICK} \
-  ${QT} \
   --build=$ARCH-slackware-linux \
   CFLAGS="$SLKCFLAGS" \
   CXXFLAGS="$SLKCFLAGS" \