[php7] forgot to rename issue file

tests/unit/src/unit/issues/IssueXXXX.hx

@@ -1,11 +0,0 @@
-package unit.issues;
-
-class Issue5919 extends unit.Test {
-#if php
-	function test() {
-		untyped __php__("$_TEST_VAR = ['test' => 12]");
-		t(untyped __call__("is_array", untyped __var__("_TEST_VAR")));
-		eq(untyped __var__("_TEST_VAR", "test"), 12);
-	}
-#end
-}