Revert "Primitives now use color closures..." (#7710)

This temporarily reverts commit c5639cd9fa
(PR https://github.com/nushell/nushell/pull/7650). See
[here](https://github.com/nushell/nushell/pull/7650#issuecomment-1375036213)
for details; the PR is accidentally adding ANSI escape codes to strings
piped to externals.

I think we should revert the PR because we're only 1-2 days away from a
release; reverting it will give us more time to land+test a proper fix
in the next release cycle.

tests/shell/environment/env.rs

@@ -125,7 +125,7 @@ fn has_file_pwd() {
 
         let actual = nu!(cwd: dirs.test(), "nu spam.nu");
 
-        assert!(nu_utils::strip_ansi_string_likely(actual.out).ends_with("has_file_pwd"));
+        assert!(actual.out.ends_with("has_file_pwd"));
     })
 }