PythonEditor: Remove pluginspec.in

Missed in 9617005e

Change-Id: Ibd8eba395e138a448d7316aa64b70ff89ae60900
Reviewed-by: Oswald Buddenhagen <oswald.buddenhagen@digia.com>

src/plugins/pythoneditor/pythoneditor.pro

@@ -3,7 +3,7 @@ include(../../qtcreatorplugin.pri)
 DEFINES += \
     PYTHONEDITOR_LIBRARY
 
-OTHER_FILES += PythonEditor.pluginspec.in \
+OTHER_FILES += \
     pythoneditor.mimetypes.xml
 
 RESOURCES += \