Revert "Migrate to eglot"

This reverts commit 193dce0fa5.

+ui.el

@@ -17,10 +17,15 @@
 (setq direnv-always-show-summary nil)
 ;; Change splash-screen banner
 (setq fancy-splash-image "~/.doom.d/assets/emacs.svg")
-;; Remove distracting LSP UI elements
-(after! eglot
-  (setq eldoc-echo-area-use-multiline-p nil)
-  (set-popup-rule! "^\\*eglot-help" :size 0.2 :quit t :select t))
+;; Disable LSP documentation popup
+(after! lsp-ui
+  (setq lsp-ui-doc-enable nil
+        lsp-signature-auto-activate nil
+        lsp-enable-symbol-highlighting nil
+        lsp-ui-sideline-enable nil
+        lsp-modeline-code-actions-enable nil
+        lsp-headerline-breadcrumb-enable nil
+        lsp-len-enable nil))
 ;; Shrink minibuffer
 (after! vertico
   (setq vertico-count 8))