[clang][Interp][NFC] Remove some unused includes

Author: tbaederr

clang/lib/AST/Interp/Interp.h

@@ -27,13 +27,9 @@
 #include "Program.h"
 #include "State.h"
 #include "clang/AST/ASTContext.h"
-#include "clang/AST/ASTDiagnostic.h"
-#include "clang/AST/CXXInheritance.h"
 #include "clang/AST/Expr.h"
 #include "llvm/ADT/APFloat.h"
 #include "llvm/ADT/APSInt.h"
-#include "llvm/Support/Endian.h"
-#include <limits>
 #include <type_traits>
 
 namespace clang {