Remove extraneous double mixin for the require.

[Dylan-M]

Description

There is a bad require call in knife/lib/chef/knife/ssl_fetch.rb where a path was accidentally doubled. This fixes that by removing the extraneous extra keyword.

Related Issue

Fixes knife ssl fetch broken with bad require call in ssl_fetch.rb #11580

Types of changes

• Bug fix (non-breaking change which fixes an issue)
• New feature (non-breaking change which adds functionality)
• Breaking change (fix or feature that would cause existing functionality to change)
• Chore (non-breaking change that does not add functionality or fix an issue)

Checklist:

• I have read the CONTRIBUTING document.
• I have run the pre-merge tests locally and they pass.
• I have updated the documentation accordingly.
• I have added tests to cover my changes.
• All new and existing tests passed.
• All commits have been signed-off for the Developer Certificate of Origin.

[tas50]

Nice catch. Thanks @Dylan-M

[Dylan-M]

No problem @tas50! It frustrated me yesterday while trying to get my new laptop set up, and I was too blind to see the double path. Looked at it again this morning and had a nice "Doh!" moment.