Restore cairo manifest setting in tests

  * certain tests again only x86-compatible

test/test_fork_cli_params.py

@@ -116,6 +116,7 @@ def test_too_big_block_id():
     )
     assert read_stream(proc.stdout) == ""
     assert f"Block number {too_big_block_id} was not found." in read_stream(proc.stderr)
+    assert proc.returncode != 0
 
 
 @pytest.mark.parametrize(

test/util.py

@@ -45,13 +45,6 @@ def run_devnet_in_background(*args, stderr=None, stdout=None, env=None):
     if "--accounts" not in args:
         args = [*args, "--accounts", "1"]
 
-    if (
-        "--cairo-compiler-manifest" not in args
-        and os.getenv("CAIRO_1_COMPILER_MANIFEST") is not None
-    ):
-        manifest = os.getenv("CAIRO_1_COMPILER_MANIFEST")
-        args = [*args, "--cairo-compiler-manifest", manifest]
-
     port = args[args.index("--port") + 1] if "--port" in args else PORT
 
     command = [