Improve auto formatting

autoformat.vim

@@ -1,4 +1,3 @@
-au BufWrite * :Autoformat
 " see here for instructions to get scalafmt set up
 let g:formatdef_scalafmt = '"ng-nailgun scalafmt"'
 let g:formatters_scala = ['scalafmt']

ftplugin/rust.vim

@@ -1,2 +1 @@
-let g:formatdef_rustfmt_force = '"rustfmt --force"'
-let g:formatters_rust = ['rustfmt_force']
+let g:rustfmt_autosave = 1

ftplugin/scala.vim

@@ -0,0 +1 @@
+au BufWrite * :Autoformat

lsp.vim

@@ -1,7 +1,7 @@
 set hidden
 
 let g:LanguageClient_serverCommands = {
-    \ 'rust': ['rustup', 'run', 'nightly', 'rls'],
+    \ 'rust': ['rls'],
     \ }
 
 nnoremap <silent> K :call LanguageClient_textDocument_hover()<CR>