move .pl files from tests-pl next to the .toml of the test that uses them

tests/scryer/helper.rs

@@ -1,5 +1,3 @@
-use assert_cmd::Command;
-use std::ffi::OsStr;
 
 pub(crate) trait Expectable {
     #[track_caller]
@@ -34,30 +32,3 @@ pub(crate) fn load_module_test<T: Expectable>(file: &str, expected: T) {
     let mut wam = Machine::with_test_streams();
     expected.assert_eq(wam.test_load_file(file).as_slice());
 }
-
-pub const SCRYER_PROLOG: &str = "scryer-prolog";
-
-/// Test whether scryer-prolog
-/// produces the expected output when called with the supplied
-/// arguments and fed the supplied input
-pub fn run_top_level_test_with_args<
-    A: IntoIterator<Item = AS>,
-    S: Into<Vec<u8>>,
-    O: assert_cmd::assert::IntoOutputPredicate<P>,
-    AS: AsRef<OsStr>,
-    P: predicates_core::Predicate<[u8]>,
->(
-    args: A,
-    stdin: S,
-    expected_stdout: O,
-) {
-    Command::cargo_bin(SCRYER_PROLOG)
-        .unwrap()
-        .arg("-f")
-        .arg("--no-add-history")
-        .args(args)
-        .write_stdin(stdin)
-        .assert()
-        .stdout(expected_stdout.into_output())
-        .success();
-}