Delete unused branches in timberland-sig/dracut

[mwilck]

We have too many branches, this is confusing.
I have made timberland_final the default branch on 2023-06-01.

branches to keep

• timberland_final: our main branch, source branch for upstream PR.
• honor-rd.timeout: source branch for RFC: honor rd.timeout for nvme ctrl_loss_tmo #11, keep until merged or rejected

branches to delete, maybe?

• master: do we need it?
• dracut_make_head: @johnmeneghini do we still need this? Can't you just set DRACUT_MAIN_VERSION?
• timberlandmaster_final_v2: similar to dracut_make_head, @johnmeneghini ?
• fixes-202303: source of Minor fixes for Timberland dracut #5, keep for reference?
• multipath-fix-netroot: source branch of fix(nvmf): set netroot=nbft #10, perhaps keep for reference?
• timberland_pr_v1: first version of upstream PR
• timberland_pr_v2: second version of upstream PR, main difference from v1 is "move connect logic to initqueue script", before final nvme-cli syntax

branches to delete

• timberland-059: obsolete, upstream 059
• timberland_final_v4: another upstream clone
• timberland_059: obsolete, timberland code state from February, based on 059
• timberland_final_v2: obsolete, same as timberland_059 but based on upstream master (at that time)
• timberland_final_v3: obsolete, timberland_final minus fix(nvmf): set netroot=nbft #10
• timberland_final_v3-mwilck-1: this was the source of fix(nvmf): test if "nvme connect-all --nbft" is supported #8, which has been merged into timberland_final_v3-mwilck, which has been merged into timberland_final_v3 (Timberland final v3 with preserved autoconnect logic #7)
• timberland_final_v4-johnm: same code as to timberland_final_v3, not squashed
• timberlandmaster_final_rebased: obsolete, code stat from Feb, slightly older than timberland_final_v2

[mwilck]

@Douglas-Farley for information.

[rahlvers]

@johnmeneghini is ok to remove branches.