Remove dead KDE4-era CMake code

src/assistants/CMakeLists.txt

@@ -5,7 +5,6 @@ function(add_assistant name)
         INSTALL_NAMESPACE "cantor/assistants")
 
     target_link_libraries("cantor_${name}"
-        ${KDE4_KDEUI_LIBS}
         cantorlibs)
 
 endfunction()

src/assistants/runscript/CMakeLists.txt

@@ -4,6 +4,6 @@ set( RunScriptAssistant_SRCS
 
 add_assistant(runscriptassistant ${RunScriptAssistant_SRCS})
 
-target_link_libraries( cantor_runscriptassistant ${KDE4_KIO_LIBS} cantorlibs)
+target_link_libraries( cantor_runscriptassistant cantorlibs)
 
 install( FILES cantor_runscript_assistant.rc  DESTINATION  ${KDE_INSTALL_KXMLGUI5DIR}/cantor )

src/backends/qalculate/CMakeLists.txt

 add_subdirectory(plotassistant)
 project(cantor-qalculate-backend)
 
-set(CMAKE_CXX_FLAGS "${CMAKE_CXX_FLAGS} ${KDE4_ENABLE_EXCEPTIONS} -Wno-deprecated")
 add_definitions(${QALCULATE_CFLAGS})
 if (QALCULATE_VERSION VERSION_GREATER_EQUAL 3.11.0)
   add_compile_definitions(QALCULATE_NEED_DISABLE_COLOR)

src/panelplugins/variablemgr/CMakeLists.txt

-set( VariableManagerPlugin_SRCS 
+set( VariableManagerPlugin_SRCS
      variablemanagerplugin.cpp
      variablemanagerwidget.cpp
 )
@@ -7,4 +7,4 @@ ki18n_wrap_ui(VariableManagerPlugin_SRCS newvardlg.ui)
 
 add_panel(variablemanagerplugin ${VariableManagerPlugin_SRCS})
 
-target_link_libraries(cantor_variablemanagerplugin ${KDE4_KDEUI_LIBS} KF5::KIOWidgets)
+target_link_libraries(cantor_variablemanagerplugin KF5::KIOWidgets)