[SYCL] fix includes in SemaSYCL

Author: dklochkov-emb

clang/lib/Sema/SemaSYCL.cpp

@@ -15,10 +15,9 @@
 #include "clang/AST/QualTypeNames.h"
 #include "clang/AST/RecordLayout.h"
 #include "clang/AST/RecursiveASTVisitor.h"
-#include "clang/AST/TemplateArgumentVisitor.h"
-#include "clang/AST/Mangle.h"
 #include "clang/AST/SYCLKernelInfo.h"
 #include "clang/AST/StmtSYCL.h"
+#include "clang/AST/TemplateArgumentVisitor.h"
 #include "clang/AST/TypeOrdering.h"
 #include "clang/AST/TypeVisitor.h"
 #include "clang/Analysis/CallGraph.h"