Use check-pass for never type tests

Author: tmiasko

src/test/ui/never_type/adjust_never.rs

@@ -1,7 +1,6 @@
 // Test that a variable of type ! can coerce to another type.
 
-// run-fail
-// error-pattern:explicit
+// check-pass
 
 #![feature(never_type)]
 

src/test/ui/never_type/call-fn-never-arg.rs

@@ -1,7 +1,6 @@
 // Test that we can use a ! for an argument of type !
 
-// run-fail
-// error-pattern:wowzers!
+// check-pass
 
 #![feature(never_type)]
 #![allow(unreachable_code)]

src/test/ui/never_type/cast-never.rs

@@ -1,7 +1,6 @@
 // Test that we can explicitly cast ! to another type
 
-// run-fail
-// error-pattern:explicit
+// check-pass
 
 #![feature(never_type)]
 

src/test/ui/never_type/never-associated-type.rs

@@ -1,7 +1,6 @@
 // Test that we can use ! as an associated type.
 
-// run-fail
-// error-pattern:kapow!
+// check-pass
 
 #![feature(never_type)]
 

src/test/ui/never_type/never-type-arg.rs

@@ -1,7 +1,6 @@
 // Test that we can use ! as an argument to a trait impl.
 
-// run-fail
-// error-pattern:oh no!
+// check-pass
 
 #![feature(never_type)]