make use of COPIES

Change-Id: I34965cada901fce3cf300a99fa65d4d3f9bd4578
Reviewed-by: Liang Qi <liang.qi@qt.io>
Reviewed-by: Oswald Buddenhagen <oswald.buddenhagen@theqtcompany.com>

mkspecs/features/qml_module.prf

@@ -25,25 +25,10 @@ qml1_target: \
 else: \
     instbase = $$[QT_INSTALL_QML]
 
-!force_independent:if(!debug_and_release|!build_all|CONFIG(release, debug|release)) {
-    # These bizarre rules copy the files to the qtbase build directory
-
-    defineReplace(qmlModStripSrcDir) {
-        return($$relative_path($$1, $$_PRO_FILE_PWD_))
-    }
-
-    qmlfiles2build.input = fq_qml_files
-    qmlfiles2build.output = $$instbase/$$TARGETPATH/${QMAKE_FUNC_FILE_IN_qmlModStripSrcDir}
-    !contains(TEMPLATE, vc.*): qmlfiles2build.variable_out = PRE_TARGETDEPS
-    qmlfiles2build.commands = $$QMAKE_COPY ${QMAKE_FILE_IN} ${QMAKE_FILE_OUT}
-    qmlfiles2build.name = COPY ${QMAKE_FILE_IN}
-    qmlfiles2build.CONFIG = no_link no_clean
-
-    QMAKE_EXTRA_COMPILERS += qmlfiles2build
-}
-
 # Install rules
 qmldir.base = $$_PRO_FILE_PWD_
 qmldir.files = $$fq_qml_files
 qmldir.path = $$instbase/$$TARGETPATH
 INSTALLS += qmldir
+
+!prefix_build: COPIES += qmldir