Replace deprecated 'getImageData' with 'getImageData(int)'

[sschulz92]

Within this PR I want to replace the deprecated method

@Deprecated
public ImageData getImageData() {
	return getImageData(100);
}

with the mentioned replacement:

getImageData(100);

This PR covers all projects, this deprecated method is gone afterwards.

[fgdrf]

Looks like you have a run removing deprecation warnings. Thanks for your contribution.

This pull adresses deprecation warning and switches to getImageData(100)

Are you kind to have a look at the test failure, is it related to the changeset? Test failure not related to this changeset

[fgdrf]

Created an issue for "flaky" test case #616