MdIconRegistry._setSvgAttributes takes unnecessary config arg

[code-tree]

Bug, feature request, or proposal:

Bug

What is the expected behavior?

MdIconRegistry._setSvgAttributes makes use of all the args passed to it.

What is the current behavior?

MdIconRegistry._setSvgAttributes takes a config arg but doesn't use it.

What are the steps to reproduce?

Simply read the code

What is the use-case or motivation for changing an existing behavior?

Cleanup

Which versions of Angular, Material, OS, browsers are affected?

@angular/material 2.0.0-alpha.9-3

Is there anything else we should know?

No

[jelbourn]

I believe the config was added as an argument because there will be options later, but I don't remember what those options are off the top of my head.

@dozingcat do you remember?

[dozingcat]

_setSvgAttributes is private and doesn't look like it should be doing anything other than modifying the SVG element itself, so this seems like a safe refactor. If the config argument is removed there, it can also be removed from _createSvgElementForSingleIcon and _extractSvgIconFromSet.

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