InputCommon: Fix unnecessary "Modifier/Range" ini file entries.

[jordan-woyak]

This prevents "Modifier/Range" values from saving if they are the default of 50%.
It was annoying that even non-configured Wii Remotes produced many of these ini file lines.

It changes this:

[Wiimote3]
Device = XInput2/0/Virtual core pointer
Source = 0
Tilt/Modifier/Range = 50.
Nunchuk/Stick/Modifier/Range = 50.
Nunchuk/Tilt/Modifier/Range = 50.
Classic/Left Stick/Modifier/Range = 50.
Classic/Right Stick/Modifier/Range = 50.
Guitar/Stick/Modifier/Range = 50.
Drums/Stick/Modifier/Range = 50.
Turntable/Stick/Modifier/Range = 50.
uDraw/Stylus/Modifier/Range = 50.
Drawsome/Stylus/Modifier/Range = 50.
[Wiimote4]
Device = XInput2/0/Virtual core pointer
Source = 0
Tilt/Modifier/Range = 50.
Nunchuk/Stick/Modifier/Range = 50.
Nunchuk/Tilt/Modifier/Range = 50.
Classic/Left Stick/Modifier/Range = 50.
Classic/Right Stick/Modifier/Range = 50.
Guitar/Stick/Modifier/Range = 50.
Drums/Stick/Modifier/Range = 50.
Turntable/Stick/Modifier/Range = 50.
uDraw/Stylus/Modifier/Range = 50.
Drawsome/Stylus/Modifier/Range = 50.
[BalanceBoard]
Device = XInput2/0/Virtual core pointer
Source = 0
Tilt/Modifier/Range = 50.
Nunchuk/Stick/Modifier/Range = 50.
Nunchuk/Tilt/Modifier/Range = 50.
Classic/Left Stick/Modifier/Range = 50.
Classic/Right Stick/Modifier/Range = 50.
Guitar/Stick/Modifier/Range = 50.
Drums/Stick/Modifier/Range = 50.
Turntable/Stick/Modifier/Range = 50.
uDraw/Stylus/Modifier/Range = 50.
Drawsome/Stylus/Modifier/Range = 50.

To this:

[Wiimote3]
Device = XInput2/0/Virtual core pointer
Source = 0
[Wiimote4]
Device = XInput2/0/Virtual core pointer
Source = 0
[BalanceBoard]
Device = XInput2/0/Virtual core pointer
Source = 0