remove unused/rarely used render markdown

we'll need to fing a better solution regardless

.config/nvim/lua/plugin/render-markdown.lua

@@ -1,13 +0,0 @@
----@module 'lazy'
----@type LazySpec
-return { {
-	'MeanderingProgrammer/render-markdown.nvim',
-	dependencies = { 'nvim-treesitter/nvim-treesitter', 'echasnovski/mini.nvim' },
-	---@module 'render-markdown'
-	---@type render.md.UserConfig
-	opts = {
-		completions = {
-			blink = { enabled = true }
-		}
-	}
-} }