Remove copyright headers in tests.

These were all removed a while ago in rust-lang/rust#57108

Author: ehuss

crates/rustfix/tests/everything/closure-immutable-outer-variable.fixed.rs

@@ -1,13 +1,3 @@
-// Copyright 2017 The Rust Project Developers. See the COPYRIGHT
-// file at the top-level directory of this distribution and at
-// http://rust-lang.org/COPYRIGHT.
-//
-// Licensed under the Apache License, Version 2.0 <LICENSE-APACHE or
-// http://www.apache.org/licenses/LICENSE-2.0> or the MIT license
-// <LICENSE-MIT or http://opensource.org/licenses/MIT>, at your
-// option. This file may not be copied, modified, or distributed
-// except according to those terms.
-
 // Point at the captured immutable outer variable
 
 fn foo(mut f: Box<dyn FnMut()>) {

crates/rustfix/tests/everything/closure-immutable-outer-variable.rs

@@ -1,13 +1,3 @@
-// Copyright 2017 The Rust Project Developers. See the COPYRIGHT
-// file at the top-level directory of this distribution and at
-// http://rust-lang.org/COPYRIGHT.
-//
-// Licensed under the Apache License, Version 2.0 <LICENSE-APACHE or
-// http://www.apache.org/licenses/LICENSE-2.0> or the MIT license
-// <LICENSE-MIT or http://opensource.org/licenses/MIT>, at your
-// option. This file may not be copied, modified, or distributed
-// except according to those terms.
-
 // Point at the captured immutable outer variable
 
 fn foo(mut f: Box<FnMut()>) {

crates/rustfix/tests/everything/str-lit-type-mismatch.fixed.rs

@@ -1,14 +1,3 @@
-// Copyright 2016 The Rust Project Developers. See the COPYRIGHT
-// file at the top-level directory of this distribution and at
-// http://rust-lang.org/COPYRIGHT.
-//
-// Licensed under the Apache License, Version 2.0 <LICENSE-APACHE or
-// http://www.apache.org/licenses/LICENSE-2.0> or the MIT license
-// <LICENSE-MIT or http://opensource.org/licenses/MIT>, at your
-// option. This file may not be copied, modified, or distributed
-// except according to those terms.
-
-
 fn main() {
     let x: &[u8] = b"foo"; //~ ERROR mismatched types
     let y: &[u8; 4] = b"baaa"; //~ ERROR mismatched types

crates/rustfix/tests/everything/str-lit-type-mismatch.rs

@@ -1,14 +1,3 @@
-// Copyright 2016 The Rust Project Developers. See the COPYRIGHT
-// file at the top-level directory of this distribution and at
-// http://rust-lang.org/COPYRIGHT.
-//
-// Licensed under the Apache License, Version 2.0 <LICENSE-APACHE or
-// http://www.apache.org/licenses/LICENSE-2.0> or the MIT license
-// <LICENSE-MIT or http://opensource.org/licenses/MIT>, at your
-// option. This file may not be copied, modified, or distributed
-// except according to those terms.
-
-
 fn main() {
     let x: &[u8] = "foo"; //~ ERROR mismatched types
     let y: &[u8; 4] = "baaa"; //~ ERROR mismatched types