What is the reason to delete the branch mickledore

[junzhuimx]

@otavio
The branch mickledore (Yocto 4.2) is deleted from 2-week ago.

• Will cut from master later?
• What is the branch strategy of meta-freesclare? In the past years, we followed with poky and meta-oe to create branches for every Yocto release.

[otavio]

@junzhuimx indeed. We reworked the code to allow it to work with the master branch. The reasons are the same as #1329; we prefer to keep a single branch that is compatible with it.

We aim to make a branch for the next Yocto Project LTS release, as companies will likely commit their products to LTS releases.