Revert "See #756 UPS/USPS modules try to calculate rates over and over"

This reverts commit 45e184a127d69b2fba639117dbad68da336aebe0.
PR for issue #756 UPS/USPS modules try to calculate rates over and over with corrected spacing

Same commit, but corrected spacing and removed the EN_en.php file
modification, in favor of __('Your order exceeds the standard shipping
weight limit. Please contact us to quote other shipping
alternatives.','wpsc’).