Disabled chips should not display close icon

[FallenRiteMonk]

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Plunkr Case (Bug Reports)
Please fork the plunkr below and create a case demonstrating your bug report. Issues without a plunkr have much less possibility to be reviewed.

http://plnkr.co/edit/NtWWnN
Plunkr not possible since the template still users rc6 which is missing chips module

Current behavior
Setting chips module disabled makes it impossible to remove a chip, but the x to remove them is still there

Expected behavior
If chips are disabled, remove the x in the upper right corner of every chip

Minimal reproduction of the problem with instructions
Just add a chip module with disabled set to true

What is the motivation / use case for changing the behavior?
In this way users are not confused with a nor working close x and the module could be used for only displaying to.