package: drop creating spurious tmp directory in feed directory

In implementing APK support it seems a a leftover was never removed that
creates an unused tmp directory in the package feed directory.

Drop it as it's not used anywhere.

Signed-off-by: Christian Marangi <[email protected]>

include/package-pack.mk

@@ -280,8 +280,6 @@ endif
 		)
     endif
 
-	$(INSTALL_DIR) $$(PDIR_$(1))/tmp
-
 ifeq ($(CONFIG_USE_APK),)
 	mkdir -p $$(IDIR_$(1))/CONTROL
 	(cd $$(IDIR_$(1))/CONTROL; \