[test] fix false results from the ABI checker

Author: glessard

test/api-digester/stability-stdlib-abi-without-asserts.test

@@ -89,5 +89,7 @@ Func UnsafeBufferPointer.withMemoryRebound(to:_:) has been removed
 Func UnsafeMutableBufferPointer.withMemoryRebound(to:_:) has been removed
 Func UnsafeMutablePointer.withMemoryRebound(to:capacity:_:) has been removed
 Func UnsafePointer.withMemoryRebound(to:capacity:_:) has been removed
+Func UnsafeMutableRawBufferPointer.storeBytes(of:toByteOffset:as:) has been removed
+Func UnsafeMutableRawPointer.storeBytes(of:toByteOffset:as:) has been removed
 
 // *** DO NOT DISABLE OR XFAIL THIS TEST. *** (See comment above.)