Do not remove documentation on a per-package basis

Since the documentation cleanup is done by the main Makefile in a
global way, there's no need to do that on a per-package basis in the
generic package infrastructure.

Signed-off-by: Thomas Petazzoni <thomas.petazzoni@free-electrons.com>

package/Makefile.package.in

@@ -171,15 +171,6 @@ $(BUILD_DIR)/%/.stamp_target_installed:
 	@$(call MESSAGE,"Installing to target")
 	$($(PKG)_INSTALL_TARGET_CMDS)
 	$(foreach hook,$($(PKG)_POST_INSTALL_TARGET_HOOKS),$(call $(hook))$(sep))
-	$(if $(BR2_HAVE_MANPAGES),,for d in man share/man; do \
-		rm -rf $(TARGET_DIR)/$$d $(TARGET_DIR)/usr/$$d; \
-	done)
-	$(if $(BR2_HAVE_INFOPAGES),,for d in info share/info; do \
-		rm -rf $(TARGET_DIR)/$$d $(TARGET_DIR)/usr/$$d; \
-	done)
-	$(if $(BR2_HAVE_DOCUMENTATION),,for d in doc share/doc; do \
-		rm -rf $(TARGET_DIR)/$$d $(TARGET_DIR)/usr/$$d; \
-	done)
 	$(Q)touch $@
 
 # Clean package