Move some run-pass attribute tests to ui

Author: petrochenkov

src/test/run-pass/attr-before-view-item.rs renamed to src/test/ui/attributes/attr-before-view-item.rs

@@ -1,6 +1,6 @@
+// compile-pass
 // pretty-expanded FIXME #23616
 
-#![allow(unused)]
 #![feature(rustc_attrs)]
 #![feature(test)]
 

src/test/run-pass/attr-before-view-item2.rs renamed to src/test/ui/attributes/attr-before-view-item2.rs

@@ -1,6 +1,6 @@
+// compile-pass
 // pretty-expanded FIXME #23616
 
-#![allow(unused)]
 #![feature(rustc_attrs)]
 #![feature(test)]
 

src/test/run-pass/attr-mix-new.rs renamed to src/test/ui/attributes/attr-mix-new.rs

@@ -1,6 +1,6 @@
+// compile-pass
 // pretty-expanded FIXME #23616
 
-#![allow(unused)]
 #![feature(rustc_attrs)]
 
 #[rustc_dummy(bar)]

src/test/ui/attrs-with-no-formal-in-generics/attrs-with-no-formal-in-generics-1.rs renamed to src/test/ui/attributes/attrs-with-no-formal-in-generics-1.rs

@@ -1,6 +1,6 @@
+// compile-pass
 // pp-exact - Make sure we actually print the attributes
 
-#![allow(unused)]
 #![feature(rustc_attrs)]
 
 struct Cat {