Allow removal of arguments

[dstallenberg]

Next to adding anonymous arguments (even though the function description specified less), it is now possible for arguments to removed (even though the function description specified more).

This is usefull for example when dealing with arguments with default values.

[coveralls]

Pull Request Test Coverage Report for Build 7168535439

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• 0 of 3 (0.0%) changed or added relevant lines in 1 file are covered.
• 2 unchanged lines in 1 file lost coverage.
• Overall coverage decreased (-0.07%) to 46.562%

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Changes Missing Coverage	Covered Lines	Changed/Added Lines	%
libraries/analysis-javascript/lib/type/resolving/InferenceTypeModelFactory.ts	0	3	0.0%

Files with Coverage Reduction	New Missed Lines	%
libraries/analysis-javascript/lib/type/resolving/InferenceTypeModelFactory.ts	2	22.58%

Totals
Change from base Build 7168472032:	-0.07%
Covered Lines:	1540
Relevant Lines:	3057

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💛 - Coveralls