similar cleanup in configure/E3/RULES_VARS; remove deprecated targets

configure/E3/RULES_VARS

@@ -6,14 +6,15 @@ DEP_MODULES:=$(filter %_DEP_VERSION, $(E3_MODULES_VARIABLES))
 
 LEVEL?=2
 
-.PHONY: env vars header vers dep _dep1 _dep2
-
 ## Print relevant environment variables
+.PHONY: env
 env: vars
 
+.PHONY: vars
 vars: header
 	$(foreach v, $(E3_MODULES_VARIABLES), $(info $(v) = $($(v)))) @#noop
 
+.PHONY: header
 header:
 	$(QUIET)echo ""
 	$(QUIET)echo "------------------------------------------------------------"
@@ -30,16 +31,17 @@ else
 	$(QUIET)tree -L $(LEVEL) $(E3_MODULES_PATH)/$(E3_MODULE_NAME)
 endif
 
-dep: _dep2
+.PHONY: dep
+dep:
 	$(QUIET)echo "require $(E3_MODULE_NAME),$(E3_MODULE_VERSION)"
 	$(QUIET)echo "< configured ..."
 	$(foreach v, $(DEP_MODULES), $(info $(v) = $($(v)))) @#noop
 
+.PHONY: vers
 vers:
 	$(QUIET)echo "EPICS_MODULE_TAG:=$(EPICS_MODULE_TAG), origin : $(origin EPICS_MODULE_TAG)"
 	$(QUIET)echo "E3_MODULE_VERSION:=$(E3_MODULE_VERSION), origin : $(origin E3_MODULE_VERSION)"
 
-
 # https://www.cmcrossroads.com/article/printing-value-makefile-variable
 print-%:
 	$(QUIET)echo $* = $($*)