Type constants should be removed

[algomaster99]

Constants for types like float are defined here. We can instead use Spoon's factory methods to compare types of two objects. For example:

- ctBinaryOperator.getLeftHandOperand().getType().getSimpleName().equals(Constants.FLOAT)
+ ctBinaryOperator.getLeftHandOperand().getType().equals(factory.Type().floatPrimitiveType())