Update instrument_existing_tests.py

Author: KRRT7

codeflash/code_utils/instrument_existing_tests.py

@@ -212,7 +212,7 @@ def visit_FunctionDef(self, node: ast.FunctionDef, test_class_name: str | None =
                                     args=[
                                         ast.JoinedStr(
                                             values=[
-                                                ast.Constant(value=get_run_tmp_file("test_return_values_").resolve().as_posix()),
+                                                ast.Constant(value=get_run_tmp_file("test_return_values_").as_posix()),
                                                 ast.FormattedValue(
                                                     value=ast.Name(id="codeflash_iteration", ctx=ast.Load()),
                                                     conversion=-1,