prism/Makefile: remove lib/prism.jar on clean

If lib/prism.jar exists (built by 'binary' target), it takes
precedence over newly compiled .class files. This is confusing, as
changing some sources, running 'make clean all' and then running PRISM
results in the "old" behaviour contained in lib/prism.jar.

Now, we remove lib/prism.jar on 'make clean'.



git-svn-id: https://www.prismmodelchecker.org/svn/prism/prism/trunk@11789 bbc10eb1-c90d-0410-af57-cb519fbb1720

prism/Makefile

@@ -533,6 +533,7 @@ clean: checks
 	done; \
 	find $(CLASSES_DIR) -name '*.class' -exec rm {} \; ; \
 	rm -f lib/*jnilib; \
+	rm -f lib/prism.jar; \
 	rm -f $(BIN_PRISM) $(BIN_XPRISM) $(BIN_PRISM_BAT) $(BIN_XPRISM_BAT) )
 
 celan: clean