Remove unused --with-java and --with-r configure flags from build script.

These configure options used to control whether to build PL/Java and PL/R,
but the build system works differently now, and the options don't exist
in the server's configure script anymore.

gpAux/Makefile

@@ -196,17 +196,10 @@ PG_LANG=false
 endif
 
 ifneq (false, ${PG_LANG})
-ifeq "$(findstring win,$(BLD_ARCH))" "win"
 CONFIGFLAGS+= --with-perl --with-python 
-else
-CONFIGFLAGS+= --with-perl --with-python --with-java
-endif 
 ifdef TCL_CFG
 CONFIGFLAGS+= --with-tcl-config=${TCL_CFG}
 endif
-ifneq "$(wildcard $(R_HOME))" ""
-CONFIGFLAGS+= --with-r
-endif
 endif
 
 # Configure in the extra path AIX requires for pthread support