[spirv] No need to expose specific visitor headers.

tools/clang/lib/SPIRV/EmitVisitor.cpp

@@ -7,7 +7,7 @@
 //
 //===----------------------------------------------------------------------===//
 
-#include "clang/SPIRV/EmitVisitor.h"
+#include "EmitVisitor.h"
 #include "clang/SPIRV/BitwiseCast.h"
 #include "clang/SPIRV/SpirvBasicBlock.h"
 #include "clang/SPIRV/SpirvBuilder.h"

tools/clang/lib/SPIRV/LowerTypeVisitor.cpp

@@ -7,7 +7,7 @@
 //
 //===----------------------------------------------------------------------===//
 
-#include "clang/SPIRV/LowerTypeVisitor.h"
+#include "LowerTypeVisitor.h"
 #include "clang/AST/Attr.h"
 #include "clang/AST/DeclCXX.h"
 #include "clang/AST/HlslTypes.h"

tools/clang/lib/SPIRV/SpirvBuilder.cpp

@@ -9,11 +9,11 @@
 
 #include "clang/SPIRV/SpirvBuilder.h"
 #include "CapabilityVisitor.h"
+#include "EmitVisitor.h"
 #include "LiteralTypeVisitor.h"
+#include "LowerTypeVisitor.h"
 #include "TypeTranslator.h"
 #include "clang/SPIRV/AstTypeProbe.h"
-#include "clang/SPIRV/EmitVisitor.h"
-#include "clang/SPIRV/LowerTypeVisitor.h"
 
 namespace clang {
 namespace spirv {