Revert "[nfc] Add test for operators on address-only types."

This reverts commit bcb86b2. For some reason this isn't working, need to investigate.

Author: zoecarver

test/Interop/Cxx/operators/Inputs/member-inline.h

@@ -43,10 +43,6 @@ struct AddressOnlyIntWrapper {
   int operator()(int x, int y) {
     return value + x * y;
   }
-
-  AddressOnlyIntWrapper operator-(AddressOnlyIntWrapper rhs) const {
-    return AddressOnlyIntWrapper(value - rhs.value);
-  }
 };
 
 struct HasDeletedOperator {

test/Interop/Cxx/operators/member-inline.swift

@@ -231,14 +231,6 @@ OperatorsTestSuite.test("PtrToPtr.subscript (inline)") {
   expectEqual(23, arr[0]![0]![0])
 }
 
-OperatorsTestSuite.test("AddressOnlyIntWrapper.minus") {
-  let lhs = AddressOnlyIntWrapper(42)
-  let rhs = AddressOnlyIntWrapper(23)
-
-  let result = lhs - rhs
-  expectEqual(19, result.value)
-}
-
 // TODO: this causes a crash (does it also crash on main?)
 //OperatorsTestSuite.test("TemplatedSubscriptArrayByVal.subscript (inline)") {
 //  let ptr: UnsafeMutablePointer<Int32> =