remove parent-dir input tests for relative paths

Author: rickeylev

tests/bootstrap_impls/venv_relative_path_tests.bzl

@@ -29,20 +29,6 @@ def _relative_path_test(env):
         ),
     ).equals("../../c/d")
 
-    env.expect.that_str(
-        relative_path(
-            from_ = "../a/b",
-            to = "../c/d",
-        ),
-    ).equals("../../c/d")
-
-    env.expect.that_str(
-        relative_path(
-            from_ = "../a/b",
-            to = "../../c/d",
-        ),
-    ).equals("../../../c/d")
-
     env.expect.that_str(
         relative_path(
             from_ = "a/b/c",