reduce dependencies

direct/src/plugin_standalone/Sources.pp

@@ -12,8 +12,6 @@
     prc:c dtoolutil:c dtoolbase:c dtool:m \
     interrogatedb:c dconfig:c dtoolconfig:m \
     express:c downloader:c pandaexpress:m \
-    pstatclient:c pandabase:c linmath:c putil:c \
-    pipeline:c panda:m \
     pystub
 
   #define OSX_SYS_FRAMEWORKS Foundation AppKit