Removed local ruby mode because it's built-in now.
Removed sml and scheme local modes.
Removed local css mode.
Removed local diff mode because it's built-in now.
Removed local apache mode.
Removed local xsl mode because I don't use it.
Removed local dtd mode because I don't use it.
Removed local csharp mode because I don't use it and it's in packages anyway.
Removed haskell mode because I don't use it and it's in packages anyway.