Review the CorrectFactor

[jabrena]

Reviewing the GenericMode, I made few questions:

• Is it necessary the CorrectFactor?
• Is it necessary to return 0?

https://github.com/ev3dev-lang-java/ev3dev-lang-java/blob/master/src/main/java/ev3dev/sensors/GenericMode.java

            reading *= correctFactor;
            if (reading < correctMin) {
                reading = 0;
            } else if (reading >= correctMax) {
                reading = Float.POSITIVE_INFINITY;
            }

• Review consumers and the effect to remove correctFactor & return reading = Float.NEGATIVE_INFINITY