Numba scan: fix typo

pytensor/link/numba/dispatch/scan.py

@@ -367,8 +367,6 @@ def scan({", ".join(outer_in_names)}):
     }
     global_env["np"] = np
 
-    scalar_op_fn = compile_function_src(
-        scan_op_src, "scan", {**globals(), **global_env}
-    )
+    scan_op_fn = compile_function_src(scan_op_src, "scan", {**globals(), **global_env})
 
-    return numba_basic.numba_njit(scalar_op_fn)
+    return numba_basic.numba_njit(scan_op_fn)