Remove old branches

[tmp64]

Have a PR attached:

• toolkit @ 0bdbe221bf797a77bc303ae23da5da007eed72fc
• lua-modding @ 9eb39dff884c3d198c2da7303bb960e97018e55a
• copy-sibling @ 67bcbe68321ab99a8d2234c302450975e401416d
• steam-api @ c49a195212e856d5df069622b5718b9626379f24
• chairmanager-merging-refactor @ fd0f16e18ed912c84b89e42e8f45d0fafa6ca72d
• chairmanager-multi-platform @ 866d8e585671188f18a92c8f0a86e9b7a0e93f24
• Editor-GUI-Refresh @ 2d127f04c4cbef9d8a3d2f1a02d924d1d33bc345
• toolkit-flowgraph-editor @ d2e4cb7dbf1f3a925a50616682235541774828fe
• editor @ 5d62a506c8aa79dff40080e144292cbc97055550
• Chairloader-Modules-V2 @ 55540c7b97aaa9a264765661e6f57f6b3e029178
• ModLoader @ 44929ea8fa8d0ebfaab416eacd9cd95ec09ab80e

Merged via PRs branches:

• imgui-docking @ edc2e98038f90d7b3313f82b32142856b973c72d
• toolkit-engine @ b0d45da8ee14f7bcfd8edf28d4393ceca133db8f
• preditor-refactor @ a0b9217d119d45869eeae207fcf253407e3e7e3a

Old branches without PRs:

• gh-pages @ 889dff59e00080f04e8b56f58d2785ea8df2edcf (this is used)
• refactoring-with-gui @ 26e2fc674881ee0dc5909c2b8158784107f83ab3 (some old code)
• class-refactoring @ 5994544c33c8583a8ca1547aff0238279df92c67 (old refactoring, before new PDB dump)
• Chairloader-Modules @ 632942d07a19d5242ebb003feb8d50e8c6aedb1b (not merged?)
• FileBrowser @ 3306c2a3bd4dfcc3d6b966b6a19596517c325108 (merged in 33e735e01b371394410f933d3d6e733691c64031, but has one new commit?)
• shader-compiler @ 97d9a2f9a8e1629ef3a410ee27e971a72733f8ea (merged in fdd5f8ca6ae2ddf52b36dce6d8f44409fceec162)
• refactoring-4 @ 29c898c52bea3277a7ada05014d2b49a892542be (merged in 05b10fe0aada9cc4ec0ee4ccdfbf0674a9079b9d)
• ci @ 01d7d9ae6b2e20a1a28054f8fb846c8cc6c6cc95 (squash-merged in 1be08b2a107e808c7ff1d7a3d05cdd746d5d5479)
• lua-dbg @ 6e84cc58d3a284b9a0cf701da68542315c5551a5 (replaced by lua-modding)
• shader-compiler-2 @ 241db2c3e5dc140bc324422da908c8da144162fc (merged in f17a99c8c3a9c4d66375c66cf760c068046f1b59)

[tmp64]

Removed branches with closed pull requests.

[tmp64]

Removed branches that were merged through a different branch.

[tmp64]

Removed manually merged branches