refactor(vc): remove hydra

hydra was removed in b08c2c7, so I'm no longer supporting hydra
workflows.

Amend: b08c2c745f

modules/emacs/vc/autoload/hydra.el

@@ -1,44 +0,0 @@
-;;; emacs/vc/autoload/hydra.el -*- lexical-binding: t; -*-
-;;;###if (modulep! :ui hydra)
-
-;;;###autoload (autoload '+vc/smerge-hydra/body "emacs/vc/autoload/hydra" nil t)
-(defhydra +vc/smerge-hydra (:hint nil
-                            :pre (if (not smerge-mode) (smerge-mode 1))
-                            ;; Disable `smerge-mode' when quitting hydra if
-                            ;; no merge conflicts remain.
-                            :post (smerge-auto-leave))
-    "
-                                                         [smerge]
-  Movement   Keep           Diff              Other
-  ╭─────────────────────────────────────────────────────────╯
-     ^_g_^       [_b_] base       [_<_] upper/base    [_C_] Combine
-     ^_C-k_^     [_u_] upper      [_=_] upper/lower   [_r_] resolve
-     ^_k_ ↑^     [_l_] lower      [_>_] base/lower    [_R_] remove
-     ^_j_ ↓^     [_a_] all        [_H_] hightlight    [_n_] next in project
-     ^_C-j_^     [_RET_] current  [_E_] ediff                 ╭──────────
-     ^_G_^                                                │ [_q_] quit
-"
-    ("g" (progn (goto-char (point-min)) (smerge-next)))
-    ("G" (progn (goto-char (point-max)) (smerge-prev)))
-    ("C-j" smerge-vc-next-conflict)
-    ("C-k" smerge-prev)
-    ("j" next-line)
-    ("k" previous-line)
-    ("b" smerge-keep-base)
-    ("u" smerge-keep-upper)
-    ("l" smerge-keep-lower)
-    ("a" smerge-keep-all)
-    ("RET" smerge-keep-current)
-    ("\C-m" smerge-keep-current)
-    ("<" smerge-diff-base-upper)
-    ("=" smerge-diff-upper-lower)
-    (">" smerge-diff-base-lower)
-    ("H" smerge-refine)
-    ("E" smerge-ediff)
-    ("C" smerge-combine-with-next)
-    ("r" smerge-resolve)
-    ("R" smerge-kill-current)
-    ;; Often after calling `smerge-vc-next-conflict', the cursor will land at
-    ;; the bottom of the window
-    ("n" (progn (smerge-vc-next-conflict) (recenter-top-bottom (/ (window-height) 8))))
-    ("q" nil :color blue))