Remove codegen_tests dir.

codegen_tests/Cargo.toml

@@ -1,9 +0,0 @@
-[package]
-name = "codegen_tests"
-version = "0.1.0"
-authors = ["Sergio Benitez <sb@sergio.bz>"]
-
-[dev-dependencies]
-compiletest-rs = "*"
-rocket = "../lib"
-rocket_macros = "../macros"

codegen_tests/src/main.rs

@@ -1,3 +0,0 @@
-fn main() {
-    println!("Hello, world!");
-}