Disable Qt4 CI

Jenkinsfile

@@ -5,22 +5,6 @@ node('CLIENT') {
         checkout scm
         sh '''git submodule update --init'''
 
-    stage 'Qt4'
-        sh '''rm -rf build
-		mkdir build
-		cd build
-		cmake -DUNIT_TESTING=1 -DBUILD_WITH_QT4=ON ..
-		make
-		ctest --output-on-failure'''
-
-    stage 'Qt4 - clang'
-        sh '''rm -rf build
-		mkdir build
-		cd build
-		cmake -DCMAKE_C_COMPILER=clang -DCMAKE_CXX_COMPILER=clang++ -DUNIT_TESTING=1 -DBUILD_WITH_QT4=ON ..
-		make
-		ctest --output-on-failure'''
-
     stage 'Qt5'
         sh '''rm -rf build
 		mkdir build