diff --git a/test/Interop/Cxx/operators/Inputs/module.modulemap b/test/Interop/Cxx/operators/Inputs/module.modulemap
index 2cc3fa14cd834..3fad5697d2a02 100644
--- a/test/Interop/Cxx/operators/Inputs/module.modulemap
+++ b/test/Interop/Cxx/operators/Inputs/module.modulemap
@@ -1,7 +1,3 @@
 module NonMemberInline {
   header "non-member-inline.h"
 }
-
-module NonMemberOutOfLine {
-  header "non-member-out-of-line.h"
-}
diff --git a/test/Interop/Cxx/operators/Inputs/non-member-out-of-line.cpp b/test/Interop/Cxx/operators/Inputs/non-member-out-of-line.cpp
deleted file mode 100644
index d6bccca7e7be0..0000000000000
--- a/test/Interop/Cxx/operators/Inputs/non-member-out-of-line.cpp
+++ /dev/null
@@ -1,5 +0,0 @@
-#include "non-member-out-of-line.h"
-
-IntBox operator+(IntBox lhs, IntBox rhs) {
-  return IntBox{.value = lhs.value + rhs.value};
-}
diff --git a/test/Interop/Cxx/operators/Inputs/non-member-out-of-line.h b/test/Interop/Cxx/operators/Inputs/non-member-out-of-line.h
deleted file mode 100644
index a0466d812d8c5..0000000000000
--- a/test/Interop/Cxx/operators/Inputs/non-member-out-of-line.h
+++ /dev/null
@@ -1,10 +0,0 @@
-#ifndef TEST_INTEROP_CXX_OPERATORS_INPUTS_NON_MEMBER_OUT_OF_LINE_H
-#define TEST_INTEROP_CXX_OPERATORS_INPUTS_NON_MEMBER_OUT_OF_LINE_H
-
-struct IntBox {
-  int value;
-};
-
-IntBox operator+(IntBox lhs, IntBox rhs);
-
-#endif
diff --git a/test/Interop/Cxx/operators/non-member-out-of-line-irgen.swift b/test/Interop/Cxx/operators/non-member-out-of-line-irgen.swift
deleted file mode 100644
index c3b3ed123837c..0000000000000
--- a/test/Interop/Cxx/operators/non-member-out-of-line-irgen.swift
+++ /dev/null
@@ -1,8 +0,0 @@
-// RUN: %target-swift-emit-ir %s -I %S/Inputs -enable-cxx-interop | %FileCheck %s
-
-import NonMemberOutOfLine
-
-public func add(_ lhs: IntBox, _ rhs: IntBox) -> IntBox { lhs + rhs }
-
-// CHECK: call i32 [[NAME:@(_Zpl6IntBoxS_|"\?\?H@YA\?AUIntBox@@U0@0@Z")]](i32 %{{[0-9]+}}, i32 %{{[0-9]+}})
-// CHECK: declare {{(dso_local )?}}i32 [[NAME]](i32, i32)
diff --git a/test/Interop/Cxx/operators/non-member-out-of-line-silgen.swift b/test/Interop/Cxx/operators/non-member-out-of-line-silgen.swift
deleted file mode 100644
index 302efa7cf8a1d..0000000000000
--- a/test/Interop/Cxx/operators/non-member-out-of-line-silgen.swift
+++ /dev/null
@@ -1,10 +0,0 @@
-// RUN: %target-swift-emit-sil %s -I %S/Inputs -enable-cxx-interop | %FileCheck %s
-
-import NonMemberOutOfLine
-
-public func add(_ lhs: IntBox, _ rhs: IntBox) -> IntBox { lhs + rhs }
-
-// CHECK: [[COUNTER:%.*]] = function_ref [[NAME:@(_Zpl6IntBoxS_|\?\?H@YA\?AUIntBox@@U0@0@Z)]] : $@convention(c) (IntBox, IntBox) -> IntBox
-// CHECK: apply [[COUNTER]](%0, %1) : $@convention(c) (IntBox, IntBox) -> IntBox
-
-// CHECK: sil [serializable] [clang "+"] [[NAME]] : $@convention(c) (IntBox, IntBox) -> IntBox
diff --git a/test/Interop/Cxx/operators/non-member-out-of-line.swift b/test/Interop/Cxx/operators/non-member-out-of-line.swift
deleted file mode 100644
index 55a4fc8506650..0000000000000
--- a/test/Interop/Cxx/operators/non-member-out-of-line.swift
+++ /dev/null
@@ -1,23 +0,0 @@
-// RUN: %empty-directory(%t)
-// RUN: %target-clang -c %S/Inputs/non-member-out-of-line.cpp -I %S/Inputs -o %t/non-member-out-of-line.o -std=c++17
-// RUN: %target-build-swift %s -I %S/Inputs -o %t/non-member-out-of-line %t/non-member-out-of-line.o -Xfrontend -enable-cxx-interop
-// RUN: %target-codesign %t/non-member-out-of-line
-// RUN: %target-run %t/non-member-out-of-line
-//
-// REQUIRES: executable_test
-
-import NonMemberOutOfLine
-import StdlibUnittest
-
-var OperatorsTestSuite = TestSuite("Operators")
-
-OperatorsTestSuite.test("plus") {
-  let lhs = IntBox(value: 42)
-  let rhs = IntBox(value: 23)
-
-  let result = lhs + rhs
-
-  expectEqual(65, result.value)
-}
-
-runAllTests()