remove duplicate E0435 test

Author: durka

src/test/compile-fail/non-constant-expr-for-vec-repeat.rs renamed to src/test/compile-fail/non-constant-expr-for-arr-len.rs

@@ -8,7 +8,7 @@
 // option. This file may not be copied, modified, or distributed
 // except according to those terms.
 
-// Check that non constant exprs fail for vector repeat syntax
+// Check that non constant exprs fail for array repeat syntax
 
 fn main() {
     fn bar(n: usize) {