IIRC, Cruz said Kasich should drop out.
Looking for what I figured would be easy corroboration for that, ran into this:
Cruz tells media it's "not accurate" that he said people without path to 1,237 should exit. Only people who don't "have a path to winning." @teddyschleifer 12:43 PM - 22 Apr 2016
This too, from Cruz Disavows Own "Kasich Should Drop Out" Comment
John Kasich is a spoiler and his remaining in the race doesn't make sense." - Cruz in March