make: fix out-of-tree build

This rule was unused, and wouldn't work for an out-of-tree build anyways.

ref #27922

Author: vtjnash

Make.inc

@@ -1169,7 +1169,6 @@ endif
 # Make tricks
 
 define dir_target
-$$(subst $$(abspath $(JULIAHOME))/,,$$(abspath $(1))): $$(abspath $(1))
 $$(abspath $(1)):
 	@mkdir -p $$@
 endef
@@ -1188,7 +1187,6 @@ ifeq ($(BUILD_OS), WINNT)
 else
 	-rm -r $$(abspath $(2)/$(3))
 endif
-$$(subst $$(abspath $(JULIAHOME))/,,$$(abspath $(2)/$(3))): $$(abspath $(2)/$(3))
 $$(abspath $(2)/$(3)): | $$(abspath $(2))
 ifeq ($$(BUILD_OS), WINNT)
 	@cmd //C mklink //J $$(call mingw_to_dos,$(2)/$(3),cd $(2) &&) $$(call mingw_to_dos,$(1),)