[antlir2][genrule_in_image] delete test for installed par

Summary:
This is much more complicated with live mode opt-by-default pars.
Just delete this test and plan to tell any users that experience this same
failure that they have to use `$(exe)` instead.

Test Plan: testhard

Reviewed By: naveedgol

Differential Revision: D68335138

fbshipit-source-id: c20fe3c6e198a642d6c38a50af932df1437339c5

antlir/antlir2/genrule_in_image/tests/BUCK

@@ -112,26 +112,6 @@ genrule_in_image(
     layer = ":with-xarexec",
 )
 
-image.layer(
-    name = "with-par",
-    features = [
-        feature.install(
-            src = ":par",
-            dst = "/par",
-        ),
-    ],
-    parent_layer = ":with-xarexec",
-)
-
-genrule_in_image(
-    name = "run-installed-par",
-    out = "f",
-    bash = """
-        /par $OUT
-    """,
-    layer = ":with-par",
-)
-
 image.layer(
     name = "mount-src",
     features = [
@@ -176,7 +156,6 @@ python_unittest(
         "DEFAULT_OUT": "$(location :default-out)",
         "DOT_DIR": "$(location :dot-dir)",
         "EXE_PAR": "$(location :run-exe-par)",
-        "INSTALLED_PAR": "$(location :run-installed-par)",
         "NAMED_DIR": "$(location :named-dir)",
         "NAMED_OUTS": "$(location :named-outs)",
         "SINGLE_FILE": "$(location :single-file)",

antlir/antlir2/genrule_in_image/tests/test.py

@@ -48,11 +48,6 @@ def test_exe_par(self) -> None:
         self.assertTrue(f.exists())
         self.assertEqual(f.read_text(), "From par\n")
 
-    def test_installed_par(self) -> None:
-        f = Path(os.getenv("INSTALLED_PAR"))
-        self.assertTrue(f.exists())
-        self.assertEqual(f.read_text(), "From par\n")
-
     def test_with_mount(self) -> None:
         f = Path(os.getenv("WITH_MOUNT"))
         self.assertTrue(f.exists())