Remove Radians, Decimal, and % Operator to work with FB

This will allow geocoder to work with Firebird database (http://www.firebirdsql.org/). Firebird supports the MOD(x, y) function, but not the % operator. Firebird doesn't support the RADIANS() or DEGREES() functions.

At the very least, using the MOD function instead of % would allow Firebird users to simply define the RADIANS and DEGREES functions in the database.