don't build pgrid every time

panda/src/testbed/Sources.pp

@@ -24,16 +24,13 @@
     pview.cxx
 #end bin_target
 
-//#begin test_bin_target
-// want this in nitely bld
-#begin bin_target
+#begin test_bin_target
   #define TARGET pgrid
 
   #define SOURCES \
     pgrid.cxx
   #define UNIX_SYS_LIBS m
-//#end test_bin_target
-#end bin_target
+#end test_bin_target
 
 #begin test_bin_target
   #define TARGET test_texmem