ci/travis: Add PyQt 5.14 to test matrix

Also remove most of install_pyqt.sh that deals with Qt4 support

.travis.yml

@@ -10,6 +10,10 @@ addons:
         packages:
             - libxkbcommon-x11-0  # for PyQt 5.12
 
+env:
+  global:
+    - PYQT_DEPS="PyQt5~=5.12.0 PyQtWebengine~=5.12.0"
+
 matrix:
     include:
         - env: RUN_PYLINT=true
@@ -19,8 +23,11 @@ matrix:
           python: '3.6'
           script: source $TRAVIS_BUILD_DIR/.travis/build_doc.sh
         - python: '3.6'
-          env: UPLOAD_COVERAGE=true
+          env:
+            - UPLOAD_COVERAGE=true
         - python: '3.7'
+          env:
+            - PYQT_DEPS="PyQt5~=5.14.0 PyQtWebengine~=5.14.0"
     fast_finish: true
 
 cache:

.travis/install_pyqt.sh

@@ -1,41 +1 @@
-if [ ! "$PYQT4" ]; then
-    foldable pip install sip 'pyqt5!=5.10,<5.14'  # 5.10 exhibits QTBUG-65235
-    # PyQt >= 5.12 distributes WebEngine separately
-    foldable pip install 'pyqtwebengine<5.14'
-    return $?;
-fi
-
-
-PYQT=$TRAVIS_BUILD_DIR/pyqt
-
-SIP_VERSION=4.16.9
-PYQT_VERSION=4.11.4
-
-if [ ! "$(ls $PYQT)" ]; then
-    mkdir -p $PYQT
-    cd $PYQT
-
-    wget -O sip.tar.gz http://sourceforge.net/projects/pyqt/files/sip/sip-$SIP_VERSION/sip-$SIP_VERSION.tar.gz
-    mkdir -p sip
-    tar xzf sip.tar.gz -C sip --strip-component=1
-
-    wget -O PyQt.tar.gz  http://sourceforge.net/projects/pyqt/files/PyQt4/PyQt-$PYQT_VERSION/PyQt-x11-gpl-$PYQT_VERSION.tar.gz
-    mkdir -p PyQt
-    tar xzf PyQt.tar.gz -C PyQt --strip-components=1
-
-    cd $PYQT/sip
-    python configure.py -e $PYQT/include
-    make
-    make install
-
-    cd $PYQT/PyQt
-    pwd
-    python configure.py --confirm-license --no-designer-plugin
-    make
-fi
-
-cd $PYQT/sip
-make install
-
-cd $PYQT/PyQt
-make install
+foldable pip install ${PYQT_DEPS}