[LSP] key-bind - ca is the nvim default for "change around". (#602)

lua/lsp/init.lua

@@ -20,7 +20,6 @@ vim.cmd("nnoremap <silent> gd <cmd>lua vim.lsp.buf.definition()<CR>")
 vim.cmd("nnoremap <silent> gD <cmd>lua vim.lsp.buf.declaration()<CR>")
 vim.cmd("nnoremap <silent> gr <cmd>lua vim.lsp.buf.references()<CR>")
 vim.cmd("nnoremap <silent> gi <cmd>lua vim.lsp.buf.implementation()<CR>")
-vim.cmd("nnoremap <silent> ca :Lspsaga code_action<CR>")
 vim.cmd("nnoremap <silent> K :Lspsaga hover_doc<CR>")
 -- vim.cmd('nnoremap <silent> <C-k> <cmd>lua vim.lsp.buf.signature_help()<CR>')
 vim.cmd("nnoremap <silent> <C-p> :Lspsaga diagnostic_jump_prev<CR>")