Remove non-functional maintenance link check.

Maintenance/makefile

@@ -8,11 +8,12 @@
 
 # Maintenance scripts not required by general LUFA users, used for project development purposes.
 
+
+# Path to the root of the LUFA tree
 LUFA_ROOT = ../
 
 all:
 
-
 # Update all Doxygen configuration files to the latest Doxygen version - force Markdown support to be disabled
 upgrade-doxygen:
 	@echo Upgrading Doxygen.conf files...
@@ -36,13 +37,6 @@ check-documentation-placeholders:
 	fi;
 	@echo Done.
 
-# Test all generated documentation for any bad links
-check-documentation-links:
-	@for html_file in `find $(LUFA_ROOT) -name *.html`; do \
-		echo Checking $$html_file...; \
-		cat $$html_file | grep -v "doxygen.org" | grep -v "fourwalledcubicle.com" | wget -nv --referer=www.lufa-lib.org --user-agent="lufa-link-check-script" -B $(dir $$html_file) --spider --force-html --input-file=-; \
-	done;
-
 # Validate the working branch - compile all documentation, demos/projects/examples and run build tests
 validate-branch:
 	make -s -C $(LUFA_ROOT) doxygen