Remove empty header file.

clang/docs/tools/clang-formatted-files.txt

 bolt/tools/llvm-bolt-fuzzer/llvm-bolt-fuzzer.cpp
 bolt/unittests/Core/MCPlusBuilder.cpp
 clang/bindings/python/tests/cindex/INPUTS/header1.h
 clang/bindings/python/tests/cindex/INPUTS/header2.h
 clang/bindings/python/tests/cindex/INPUTS/header3.h
 clang/examples/Attribute/Attribute.cpp
 clang/examples/CallSuperAttribute/CallSuperAttrInfo.cpp
 clang/examples/PluginsOrder/PluginsOrder.cpp
-clang/include/clang/Analysis/AnalysisDiagnostic.h
 clang/include/clang/Analysis/BodyFarm.h
 clang/include/clang/Analysis/IssueHash.h
 clang/include/clang/Analysis/MacroExpansionContext.h
 clang/include/clang/Analysis/Analyses/CalledOnceCheck.h
 clang/include/clang/Analysis/Analyses/CFGReachabilityAnalysis.h
 clang/include/clang/Analysis/Analyses/ExprMutationAnalyzer.h
 clang/include/clang/Analysis/FlowSensitive/ControlFlowContext.h
 clang/include/clang/Analysis/FlowSensitive/DataflowAnalysis.h

clang/include/clang/Analysis/AnalysisDiagnostic.h

-//===--- DiagnosticAnalysis.h - Diagnostics for libanalysis -----*- C++ -*-===//
-//
-// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
-// See https://llvm.org/LICENSE.txt for license information.
-// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
-//
-//===----------------------------------------------------------------------===//
-
-#ifndef LLVM_CLANG_ANALYSIS_ANALYSISDIAGNOSTIC_H
-#define LLVM_CLANG_ANALYSIS_ANALYSISDIAGNOSTIC_H
-
-#include "clang/Basic/DiagnosticAnalysis.h"
-
-#endif

clang/include/clang/module.modulemap

 module Clang_Config { requires cplusplus umbrella "Config" module * { export * } }
 
 // Files for diagnostic groups are spread all over the include/clang/ tree, but
 // logically form a single module.
 module Clang_Diagnostics {
   requires cplusplus
 
   module All { header "Basic/AllDiagnostics.h" export * }
-  module Analysis {
-    header "Analysis/AnalysisDiagnostic.h" export *
-    textual header "Analysis/Analyses/UnsafeBufferUsageGadgets.def"
-  }
+  module Analysis { textual header "Analysis/Analyses/UnsafeBufferUsageGadgets.def" }
   module AST { header "AST/ASTDiagnostic.h" export * }
   module Comment { header "AST/CommentDiagnostic.h" export * }
   module Driver { header "Driver/DriverDiagnostic.h" export * }
   module Frontend { header "Frontend/FrontendDiagnostic.h" export * }
   module Lex { header "Lex/LexDiagnostic.h" export * }
   module Parse { header "Parse/ParseDiagnostic.h" export * }
   module Sema { header "Sema/SemaDiagnostic.h" export * }
   module Serialization { header "Serialization/SerializationDiagnostic.h" export * }