Remove metals client. (#46)

It's available as a separate package now:
https://melpa.org/#/lsp-metals

Author: kurnevsky

README.org

@@ -15,9 +15,6 @@
   - [[#lsp-treemacs-deps-list][lsp-treemacs-deps-list]]
     - [[#commands-1][Commands]]
     - [[#screenshot-4][Screenshot]]
-  - [[#lsp-metals-treeview][lsp-metals-treeview]]
-    - [[#commands-2][Commands]]
-    - [[#screenshot-5][Screenshot]]
 
 * Summary
   Integration between [[https://github.com/emacs-lsp/lsp-mode][lsp-mode]] and [[https://github.com/Alexander-Miller/treemacs][treemacs]] and implementation of treeview controls using [[https://github.com/Alexander-Miller/treemacs][treemacs]] as a tree renderer.
@@ -55,50 +52,3 @@
     - ~lsp-treemacs-java-deps-refresh~ - refresh the view. Bound to ~r~.
 *** Screenshot
     [[file:screenshots/dependencies.gif]]
-** lsp-metals-treeview
-Support for Scala Metals treeview. The treeview is disabled by default in order
-to enable the treeview use one of the following configuration approaches.
-If you are using use-package:
-#+BEGIN_SRC elisp
-
-(use-package lsp-treemacs
-  :config
-  (lsp-metals-treeview-enable t)
-  (setq lsp-metals-treeview-show-when-views-received t))
-
-#+END_SRC
-
-lsp-metals-treeview-show-when-views-received when true will automatically
-display the treeview when Metals has initialised the project and sent the
-initial top level treeview information. If you wish to keep the tree hidden and
-show it explicitly via a command or a bound key leave the variable false
-(default) and show the treeview using M-x lsp-metals-treeview.
-
-Alternatively if you're not using use-package:
-
-#+BEGIN_SRC elisp
-
-(require 'lsp-metals-treeview)
-(lsp-metals-treeview-enable t)
-(setq lsp-metals-treeview-show-when-views-received t)
-
-#+END_SRC
-
-The metals can be displayed at anytime by using M-x lsp-metals-treeview.
-
-To enable logging of metals treeview actions/responses use the variable
-lsp-metals-treeview-logging (boolean). All messages will be logged to the lsp
-logging buffer.
-
-*** Commands
-q - when the treeview has focus it can be hidden using the q key. To show the
-tree use M-x lsp-metals-treeview or bind this function to a key.
-
-lsp-shutdown-workspace will automatically close the treeview associated with the
-current file buffer.
-
-When switching files the treeview will switch to the treeview associated with
-the new workspace.
-
-*** Screenshot
-[[file:screenshots/metals-treeview.gif]]