[cxx-interop] fix Egor's review comments for move-only patch

Author: hyp

test/Interop/Cxx/class/type-classification-module-interface.swift

@@ -26,6 +26,9 @@
 
 // CHECK: struct StructNonCopyableTriviallyMovable
 
+// CHECK: struct StructWithPointerNonCopyableTriviallyMovable
+// CHECK: struct StructWithPointerNonCopyableTriviallyMovableField
+
 // CHECK: struct Iterator {
 // CHECK: }
 

test/Interop/Cxx/stdlib/std-unique-ptr.swift

@@ -4,12 +4,7 @@
 
 import StdlibUnittest
 import StdUniquePtr
-#if os(Linux)
 import CxxStdlib
-// FIXME: import CxxStdlib.string once libstdc++ is split into submodules.
-#else
-import CxxStdlib.memory
-#endif
 
 var StdUniquePtrTestSuite = TestSuite("StdUniquePtr")