Update signcolumn, show diagnostics colored line numbers, remove

diagnostics signs from column. Remove tiny inline diagnostics and
re-enable virtual text with a circle icon instead of a box icon.
from c

nvim/lua/plugs/tiny-inline-diagnostics.lua

@@ -1,27 +0,0 @@
-return {
-    "rachartier/tiny-inline-diagnostic.nvim",
-    event = "VeryLazy",
-    priority = 1000,
-    config = function()
-        require("tiny-inline-diagnostic").setup()
-
-        vim.diagnostic.config({
-            virtual_text = false,
-        })
-
-        local colors = require("ayu.colors")
-        colors.generate(true)
-        -- These are not apart of the Ayu color theme, however, I needed these
-        -- colors while still fitting in with the rest
-        local ayu_turquoise = "#5CCFE6"
-        local ayu_dark_blue = "#3A7BD5"
-        for _, highlight in ipairs({
-            { "DiagnosticUnderlineError", { undercurl = true, sp = colors.error } },
-            { "DiagnosticUnderlineWarn",  { undercurl = true, sp = colors.warning } },
-            { "DiagnosticUnderlineHint",  { undercurl = true, sp = ayu_turquoise } },
-            { "DiagnosticUnderlineInfo",  { undercurl = true, sp = ayu_dark_blue } },
-        }) do
-            vim.api.nvim_set_hl(0, highlight[1], highlight[2])
-        end
-    end
-}