[FS#864] Fix for 11ac (5Ghz) on TP-Link Archer C59 (ver 1.0)

[LEDE Bugs]

The following task has a new comment added:

FS#864 - Fix for 11ac (5Ghz) on TP-Link Archer C59 (ver 1.0)
User who did this - tboege (tboege)

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This fix is not nescessary any more - at least from snapshot 2017-11-05, but possibly already fixet in  17.01.4
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More information can be found at the following URL:
https://bugs.lede-project.org/index.php?do=details&task_id=864#comment3795