Remove unused variables flagged in PR review

- Remove unused local variable 'input_data' in _layer_norm_extended_test.py
- Remove unused global '_EPS_F' in skip_normalization_unit_test.py

Co-authored-by: Copilot <223556219+Copilot@users.noreply.github.com>

Author: gramalingam

onnxscript/rewriter/ort_fusions/skip_normalization_unit_test.py

@@ -30,7 +30,6 @@
 )
 
 _B, _S, _D = 2, 8, 16
-_EPS_F = ir.tensor(np.array([1e-6], dtype=np.float32))
 
 
 # ========== Skip RMS Norm patterns ==========

onnxscript/rewriter/rules/fusion/_layer_norm_extended_test.py

@@ -11,7 +11,6 @@
 
 import unittest
 
-import numpy as np
 import onnx_ir as ir
 
 import onnxscript.optimizer
@@ -159,10 +158,6 @@ def test_div_with_bias(self):
     def test_double_precision(self):
         """Double-precision inputs → fuses (double is a valid compute type)."""
         model_proto = _ln_double.to_model_proto()
-        input_data = {
-            "x": np.random.randn(2, 4, 8).astype(np.float64),
-            "scale": np.random.randn(8).astype(np.float64),
-        }
         model = ir.serde.deserialize_model(model_proto)
         count = fuse_layer_normalization(model)
         self.assertGreater(count, 0)