Remove incorrect test

Author: jessegrabowski

tests/tensor/rewriting/test_linalg.py

@@ -921,14 +921,6 @@ def test_rewrite_cholesky_diag_to_sqrt_diag_not_applied():
     nodes = f_rewritten.maker.fgraph.apply_nodes
     assert any(isinstance(node.op, Cholesky) for node in nodes)
 
-    # Case 2 : eye is degenerate
-    x = pt.scalar("x")
-    y = pt.eye(1) * x
-    z_cholesky = pt.linalg.cholesky(y)
-    f_rewritten = function([x], z_cholesky, mode="FAST_RUN")
-    nodes = f_rewritten.maker.fgraph.apply_nodes
-    assert any(isinstance(node.op, Cholesky) for node in nodes)
-
 
 def test_slogdet_specialization():
     x, a = pt.dmatrix("x"), np.random.rand(20, 20)