CMake: drop empty calamaresUi

- Empty variable and some unused wrappings doing nothing.

src/calamares/CMakeLists.txt

@@ -18,10 +18,6 @@ set( calamaresSources
     progresstree/ViewStepItem.cpp
 )
 
-set( calamaresUi
-    #nothing to do here
-)
-
 include_directories(
     .
     ${CMAKE_CURRENT_BINARY_DIR}
@@ -33,13 +29,11 @@ include_directories(
 
 include( GNUInstallDirs )
 
-qt5_wrap_ui( calamaresUi_H ${calamaresUi} )
-
 # Translations
 include( CalamaresAddTranslations )
 add_calamares_translations( ${CALAMARES_TRANSLATION_LANGUAGES} )
 
-set( final_src ${calamaresUi_H} ${calamaresSources} ${calamaresRc} ${trans_outfile} )
+set( final_src ${calamaresSources} ${calamaresRc} ${trans_outfile} )
 
 add_executable( calamares_bin ${final_src} )
 set_target_properties(calamares_bin