Prune copyright headers

These are not legally required and are mostly noise. See:
* rust-lang/rust#58036
* rust-lang/rls#1326

src/configuration.ts

@@ -1,13 +1,3 @@
-// Copyright 2017 The RLS 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.
-
 'use strict';
 
 import { workspace, WorkspaceConfiguration } from 'vscode';

src/extension.ts

@@ -1,13 +1,3 @@
-// Copyright 2017 The RLS 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.
-
 'use strict';
 
 import { rustupUpdate, ensureToolchain, checkForRls, execCmd, spawnProcess } from './rustup';

src/rustup.ts

@@ -1,13 +1,3 @@
-// Copyright 2017 The RLS 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.
-
 'use strict';
 
 import * as child_process from 'child_process';

src/spinner.ts

@@ -1,13 +1,3 @@
-// Copyright 2017 The RLS 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.
-
 'use strict';
 
 import { window } from 'vscode';

src/tasks.ts

@@ -1,13 +1,3 @@
-// Copyright 2017 The RLS 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.
-
 import { Disposable, ShellExecution, ShellExecutionOptions, Task, TaskDefinition, TaskGroup, TaskPanelKind, TaskPresentationOptions, TaskProvider, TaskRevealKind, WorkspaceFolder, tasks, TaskExecution } from 'vscode';
 
 export function activateTaskProvider(target: WorkspaceFolder): Disposable {

src/utils/child_process.ts

@@ -1,13 +1,3 @@
-// Copyright 2017 The RLS 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.
-
 'use strict';
 
 /**