fix: remove unnecessary Optimizer from benchmark test

The test only needs project_root, not a full Optimizer (which requires
an API key). Also adds missing __init__.py to tests/benchmarks/.

Author: KRRT7

tests/benchmarks/__init__.py

@@ -1,31 +1,18 @@
-from argparse import Namespace
 from pathlib import Path
 
 from codeflash.discovery.functions_to_optimize import FunctionToOptimize
 from codeflash.languages.python.context.code_context_extractor import get_code_optimization_context
 from codeflash.models.models import FunctionParent
-from codeflash.optimization.optimizer import Optimizer
 
 
 def test_benchmark_extract(benchmark) -> None:
-    file_path = Path(__file__).parent.parent.parent.resolve() / "codeflash"
-    opt = Optimizer(
-        Namespace(
-            project_root=file_path.resolve(),
-            disable_telemetry=True,
-            tests_root=(file_path / "tests").resolve(),
-            test_framework="pytest",
-            pytest_cmd="pytest",
-            experiment_id=None,
-            test_project_root=Path.cwd(),
-        )
-    )
+    project_root = Path(__file__).parent.parent.parent.resolve() / "codeflash"
     function_to_optimize = FunctionToOptimize(
         function_name="replace_function_and_helpers_with_optimized_code",
-        file_path=file_path / "languages" / "function_optimizer.py",
+        file_path=project_root / "languages" / "function_optimizer.py",
         parents=[FunctionParent(name="FunctionOptimizer", type="ClassDef")],
         starting_line=None,
         ending_line=None,
     )
 
-    benchmark(get_code_optimization_context, function_to_optimize, opt.args.project_root)
+    benchmark(get_code_optimization_context, function_to_optimize, project_root)