Revert "Add simple script to fetch latest rust-analyzer"

This reverts commit b53bbf4c2bc32a83f1b8eb5309e28bdd45fe451c.

Both vscode and coc.nvim extensions decided to tell users with
a working setup to fuck themselves, so this is useless now.

Id: 031381d8bb2f88b18a879aeaf3ed29483ff3846e
Author: Caio
Commit time: 2020-02-08T12:04:10+01:00

Modified .gitignore

@@ -1,5 +1,4
*.pyc
custom.d/*
mplayer/registry
bin/idea
-bin/ra_lsp_server

Deleted bin/update_rust_analyzer.sh

@@ -1,7 +1,0
-#!/usr/bin/env bash
-
-set -e
-
-wget 'https://github.com/rust-analyzer/rust-analyzer/releases/latest/download/ra_lsp_server-linux' -O /tmp/ra_lsp_server
-chmod +x /tmp/ra_lsp_server
-mv /tmp/ra_lsp_server ${HOME}/bin/