removed creation of Windows icon in qmake project

this never worked when building concurrently

videodownloader.pro

@@ -139,9 +139,6 @@ OTHER_FILES += \
     resources/config.h.in \
     resources/windows.rc.in
 
-# make windows icon
-win32:include(windowsicon.pri)
-
 # add libs
 CONFIG(debug, debug|release) {
     LIBS += -lc++utilitiesd

windowsicon.pri

@@ -1,23 +0,0 @@
-ffmpegpath = $$(FFMPEG_PATH)
-equals(ffmpegpath, "") {
-    exists(/usr/bin/ffmpeg) {
-        ffmpegpath = /usr/bin/ffmpeg
-    } else {
-        exists(/usr/bin/avconv) {
-            ffmpegpath = /usr/bin/avconv
-        }
-    }
-}
-!equals(ffmpegpath, "") {
-    WINDOWS_ICONS = resources/icons/hicolor/128x128/apps/$${projectname}.png
-    windowsicon.name = windowsicon
-    windowsicon.input = WINDOWS_ICONS
-    windowsicon.output = $${OUT_PWD}/$$TS_DIR/${QMAKE_FILE_BASE}.qm
-    windowsicon.commands = $${ffmpegpath} -y -i ${QMAKE_FILE_IN} -vf crop=iw-20:ih-20:10:10,scale=64:64 "$${OUT_PWD}/res/windowsicon_${QMAKE_FILE_BASE}.ico"
-    windowsicon.CONFIG = no_link
-    QMAKE_EXTRA_COMPILERS += windowsicon
-    PRE_TARGETDEPS += compiler_windowsicon_make_all
-    RC_ICONS = $${OUT_PWD}/res/windowsicon_$${projectname}.ico
-} else {
-    warning("Unfortunately ffmpeg could not be found and hence windows application icons can not be generated. The path of ffmpeg can be specified using the FFMPEG_PATH environment variable.")
-}