[Profiler] NFC: Trim out unused imports

Also bump the copyright year.

Author: hamishknight

include/swift/SIL/SILProfiler.h

@@ -2,7 +2,7 @@
 //
 // This source file is part of the Swift.org open source project
 //
-// Copyright (c) 2014 - 2017 Apple Inc. and the Swift project authors
+// Copyright (c) 2014 - 2022 Apple Inc. and the Swift project authors
 // Licensed under Apache License v2.0 with Runtime Library Exception
 //
 // See https://swift.org/LICENSE.txt for license information

lib/SIL/IR/SILProfiler.cpp

@@ -2,7 +2,7 @@
 //
 // This source file is part of the Swift.org open source project
 //
-// Copyright (c) 2014 - 2017 Apple Inc. and the Swift project authors
+// Copyright (c) 2014 - 2022 Apple Inc. and the Swift project authors
 // Licensed under Apache License v2.0 with Runtime Library Exception
 //
 // See https://swift.org/LICENSE.txt for license information
@@ -20,13 +20,6 @@
 #include "swift/Parse/Lexer.h"
 #include "swift/SIL/FormalLinkage.h"
 #include "swift/SIL/SILModule.h"
-#include "llvm/IR/GlobalValue.h"
-#include "llvm/IR/Intrinsics.h"
-#include "llvm/ProfileData/Coverage/CoverageMapping.h"
-#include "llvm/ProfileData/Coverage/CoverageMappingWriter.h"
-#include "llvm/ProfileData/InstrProf.h"
-
-#include <forward_list>
 
 #define DEBUG_TYPE "SILProfiler"