Always remember to back up the files you delete/modify

How to remove spotlight:

If you want to disable Spotlight, you just have to remove these. Also install NoSpot, from Cydia, which will hide the Spotlight page. Also do not forget to uncheck all the options in Settings -> General -> Spotlight Search as this will be disabled after removal.

 /System/Library/Spotlight
 /System/Library/SearchBundles
 /System/Library/PrivateFrameworks/Spotlight.framework
 /System/Library/PrivateFrameworks/Search.framework
 /System/Library/PreferenceBundles/SearchSettings.bundle
 /System/Library/LaunchDaemons/com.apple.searchd.plist
 /System/Library/LaunchDaemons/com.apple.search.appindexer.plist
 /Applications/Preferences.app/the "Search Results.strings" localization file