nvim: after/plugin/gitsigns: Update configuration

current_line_blame_formatter_opts is deprecated. Update the signs
configuration.

nvim/.config/nvim/after/plugin/gitsigns.lua

@@ -9,18 +9,10 @@ require('gitsigns').setup {
   word_diff           = false,
   attach_to_untracked = false,
   current_line_blame  = false,
-  current_line_blame_opts = {
-    virt_text     = true,
-    virt_text_pos = 'eol', -- 'eol' | 'overlay' | 'right_align'
-    delay         = 1000,
-  },
   watch_gitdir = {
     interval     = 1000,
     follow_files = true
   },
-  current_line_blame_formatter_opts = {
-    relative_time = false
-  },
   preview_config = {
     -- Options passed to nvim_open_win
     border   = 'single',
@@ -33,11 +25,11 @@ require('gitsigns').setup {
     enable = false
   },
   signs = {
-    add          = { hl = 'GitSignsAdd'   , text = '│', numhl='GitSignsAddNr'   , linehl='GitSignsAddLn'    },
-    change       = { hl = 'GitSignsChange', text = '│', numhl='GitSignsChangeNr', linehl='GitSignsChangeLn' },
-    delete       = { hl = 'GitSignsDelete', text = '_', numhl='GitSignsDeleteNr', linehl='GitSignsDeleteLn' },
-    topdelete    = { hl = 'GitSignsDelete', text = '‾', numhl='GitSignsDeleteNr', linehl='GitSignsDeleteLn' },
-    changedelete = { hl = 'GitSignsChange', text = '~', numhl='GitSignsChangeNr', linehl='GitSignsChangeLn' },
+    add          = { text = '+' },
+    change       = { text = '│' },
+    delete       = { text = '-' },
+    topdelete    = { text = '‾' },
+    changedelete = { text = '~' },
   },
   on_attach = function(bufnr)
     local gs = package.loaded.gitsigns