[llvm] Stop including llvm/ADT/DenseMap.h (NFC)

Identified with clangd.

llvm/tools/llvm-cov/CoverageReport.cpp

@@ -12,7 +12,6 @@
 
 #include "CoverageReport.h"
 #include "RenderingSupport.h"
-#include "llvm/ADT/DenseMap.h"
 #include "llvm/ADT/SmallString.h"
 #include "llvm/Support/Format.h"
 #include "llvm/Support/Path.h"

llvm/tools/llvm-mca/Views/SummaryView.h

@@ -28,7 +28,6 @@
 #ifndef LLVM_TOOLS_LLVM_MCA_SUMMARYVIEW_H
 #define LLVM_TOOLS_LLVM_MCA_SUMMARYVIEW_H
 
-#include "llvm/ADT/DenseMap.h"
 #include "llvm/MC/MCSchedule.h"
 #include "llvm/MCA/View.h"
 #include "llvm/Support/raw_ostream.h"

llvm/tools/llvm-pdbutil/llvm-pdbutil.cpp

@@ -27,7 +27,6 @@
 #include "YAMLOutputStyle.h"
 
 #include "llvm/ADT/ArrayRef.h"
-#include "llvm/ADT/DenseMap.h"
 #include "llvm/ADT/STLExtras.h"
 #include "llvm/ADT/StringExtras.h"
 #include "llvm/BinaryFormat/Magic.h"

llvm/tools/llvm-pdbutil/llvm-pdbutil.h

@@ -9,7 +9,6 @@
 #ifndef LLVM_TOOLS_LLVMPDBDUMP_LLVMPDBDUMP_H
 #define LLVM_TOOLS_LLVMPDBDUMP_LLVMPDBDUMP_H
 
-#include "llvm/ADT/DenseMap.h"
 #include "llvm/ADT/PointerUnion.h"
 #include "llvm/DebugInfo/PDB/Native/LinePrinter.h"
 #include "llvm/Support/CommandLine.h"

llvm/tools/llvm-reduce/deltas/ReduceAttributes.cpp

@@ -15,7 +15,6 @@
 #include "Delta.h"
 #include "TestRunner.h"
 #include "llvm/ADT/ArrayRef.h"
-#include "llvm/ADT/DenseMap.h"
 #include "llvm/ADT/STLExtras.h"
 #include "llvm/ADT/Sequence.h"
 #include "llvm/ADT/SmallVector.h"

llvm/unittests/IR/CFGBuilder.h

@@ -14,7 +14,6 @@
 #ifndef LLVM_UNITTESTS_CFG_BUILDER_H
 #define LLVM_UNITTESTS_CFG_BUILDER_H
 
-#include "llvm/ADT/DenseMap.h"
 #include "llvm/ADT/StringMap.h"
 #include "llvm/ADT/StringRef.h"
 #include "llvm/Support/Debug.h"

llvm/utils/TableGen/X86FoldTablesEmitter.cpp

@@ -14,7 +14,6 @@
 #include "CodeGenInstruction.h"
 #include "CodeGenTarget.h"
 #include "X86RecognizableInstr.h"
-#include "llvm/ADT/DenseMap.h"
 #include "llvm/Support/FormattedStream.h"
 #include "llvm/Support/X86FoldTablesUtils.h"
 #include "llvm/TableGen/Record.h"