testsuitegenerator: Do not generate nonsensical tests for 'maxLength'
testsuitegenerator: Do not generate nonsensical tests for 'maxLength'

The default values to test for parameters of type 'number' are [0, -1, 300].
Neither '0' nor '-1' makes any sense for 'maxLength'.

Change-Id: I456bd27ecb729f4c920071b56390f7f405c6d2d5

wikimedia/oojs-ui,wikimedia/oojs-ui,wikimedia/oojs-ui,wikimedia/oojs-ui