refactor($interpolate): remove unnecessary else

[Nikhil22]

What kind of change does this PR introduce? (Bug fix, feature, docs update, ...)
Cleaner code.

What is the current behavior? (You can also link to an open issue here)

What is the new behavior (if this is a feature change)?

Does this PR introduce a breaking change?

No.

Please check if the PR fulfills these requirements

• The commit message follows our guidelines: https://github.com/angular/angular.js/blob/master/CONTRIBUTING.md#commit-message-format
• Tests for the changes have been added (for bug fixes / features)
• Docs have been added / updated (for bug fixes / features)

Other information:

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[ghost]

I signed it

[Narretz]

There must be a trailing space here. Can you please remove it?

[Nikhil22]

it has been removed now

[Narretz]

Can you please update the commit message to refactor($interpolate): remove unnecessary else ?

[googlebot]

CLAs look good, thanks!

[googlebot]

CLAs look good, thanks!