(mini.base16) Update 'coc.nvim' to not explicitly highlight diagnostics.

Details:
  - Resolve #706.

Author: wroyca

lua/mini/base16.lua

@@ -1005,21 +1005,6 @@ H.apply_palette = function(palette, use_cterm)
   end
 
   if H.has_integration('neoclide/coc.nvim') then
-    hi('CocErrorHighlight',   {link='DiagnosticError'})
-    hi('CocHintHighlight',    {link='DiagnosticHint'})
-    hi('CocInfoHighlight',    {link='DiagnosticInfo'})
-    hi('CocWarningHighlight', {link='DiagnosticWarn'})
-
-    hi('CocErrorFloat',   {link='DiagnosticFloatingError'})
-    hi('CocHintFloat',    {link='DiagnosticFloatingHint'})
-    hi('CocInfoFloat',    {link='DiagnosticFloatingInfo'})
-    hi('CocWarningFloat', {link='DiagnosticFloatingWarn'})
-
-    hi('CocErrorSign',   {link='DiagnosticSignError'})
-    hi('CocHintSign',    {link='DiagnosticSignHint'})
-    hi('CocInfoSign',    {link='DiagnosticSignInfo'})
-    hi('CocWarningSign', {link='DiagnosticSignWarn'})
-
     hi('CocCodeLens',             {link='LspCodeLens'})
     hi('CocDisabled',             {link='Comment'})
     hi('CocMarkdownLink',         {fg=p.base0F, bg=nil,      attr=nil, sp=nil})