CMake: Depend p3converter on the pandaegg metalib directly.

pandatool/src/converter/CMakeLists.txt

@@ -6,4 +6,4 @@ set(P3CONVERTER_SOURCES
     somethingToEggConverter.cxx eggToSomethingConverter.cxx)
 
 add_library(p3converter STATIC ${P3CONVERTER_HEADERS} ${P3CONVERTER_SOURCES})
-target_link_libraries(p3converter p3pandatoolbase p3egg2pg p3recorder p3pystub)
+target_link_libraries(p3converter p3pandatoolbase pandaegg p3pystub)