Removed signed shift right from the utilities.

libsolidity/codegen/ABIFunctions.h

@@ -195,7 +195,7 @@ private:
 	std::string copyToMemoryFunction(bool _fromCalldata);
 
 	std::string shiftLeftFunction(size_t _numBits);
-	std::string shiftRightFunction(size_t _numBits, bool _signed);
+	std::string shiftRightFunction(size_t _numBits);
 	/// @returns the name of a function that rounds its input to the next multiple
 	/// of 32 or the input if it is a multiple of 32.
 	std::string roundUpFunction();