Remove dtrt-indent entries for crystal, rust & scala

They were merged upstream in jscheid/dtrt-indent/pull/49

modules/lang/crystal/config.el

@@ -7,9 +7,7 @@
   (set-eval-handler! 'crystal-mode
     '((:command     . "crystal")
       (:exec        . "%c %s")
-      (:description . "Run Crystal script")))
-  (after! dtrt-indent
-    (add-to-list 'dtrt-indent-hook-mapping-list '(crystal-mode ruby crystal-indent-level))))
+      (:description . "Run Crystal script"))))
 
 
 (use-package! flycheck-crystal

modules/lang/rust/config.el

@@ -21,11 +21,6 @@
   (when (featurep! +lsp)
     (add-hook 'rust-mode-local-vars-hook #'lsp!))
 
-  ;; TODO PR these upstream
-  (after! dtrt-indent
-    (pushnew! dtrt-indent-hook-mapping-list
-              '(rust-mode default rust-indent-offset)
-              '(rustic-mode default rustic-indent-offset)))
   (when (featurep! :tools editorconfig)
     (after! editorconfig
       (pushnew! editorconfig-indentation-alist

modules/lang/scala/config.el

@@ -8,9 +8,6 @@
   (setq-hook! 'scala-mode-hook
     comment-line-break-function #'+scala-comment-indent-new-line)
 
-  (after! dtrt-indent
-    (add-to-list 'dtrt-indent-hook-mapping-list '(scala-mode c/c++/java scala-indent:step)))
-
   (when (featurep! +lsp)
     (add-hook 'scala-mode-local-vars-hook #'lsp!)))