remove attr enable for conn

tensorneat/algorithm/neat/gene/conn/base.py

@@ -4,27 +4,16 @@ from .. import BaseGene
 
 class BaseConnGene(BaseGene):
     "Base class for connection genes."
-    fixed_attrs = ["input_index", "output_index", "enabled"]
+    fixed_attrs = ["input_index", "output_index"]
 
     def __init__(self):
         super().__init__()
 
     def crossover(self, state, randkey, gene1, gene2):
-        def crossover_attr():
-            return jnp.where(
-                jax.random.normal(randkey, gene1.shape) > 0,
-                gene1,
-                gene2,
-            )
-
-        return jax.lax.cond(
-            gene1[2] == gene2[2],  # if both genes are enabled or disabled
-            crossover_attr,  # then randomly pick attributes from gene1 or gene2
-            lambda: jnp.where(  # one gene is enabled and the other is disabled
-                gene1[2],  # if gene1 is enabled
-                gene1,  # then return gene1
-                gene2,  # else return gene2
-            ),
+        return jnp.where(
+            jax.random.normal(randkey, gene1.shape) > 0,
+            gene1,
+            gene2,
         )
 
     def forward(self, state, attrs, inputs):