nvim: keymappings: Do not use 'jk' for Esc anymore

With 60% keyboard, Esc is easier to hit and in sway, may be we should
map Caps to Esc.

nvim/.config/nvim/lua/keymappings.lua

@@ -1,10 +1,5 @@
 local remap = vim.api.nvim_set_keymap
 
--- Remap escape keys to something usable on home row
-remap('i', 'jk',    '<Esc>', { noremap = true })
-remap('c', 'jk',    '<C-C>', { noremap = true })
-remap('i', '<Esc>', '<Nop>', { noremap = true })
-remap('c', '<Esc>', '<Nop>', { noremap = true })
 -- Use Q to execute default register.
 remap('n', 'Q', '<Nop>', { noremap = true })
 -- Save