use length from dna

inc/values/Dna.hpp

@@ -40,8 +40,6 @@ struct Branch
   uint8_t size_var;
 
   uint8_t length;
-  uint8_t length_parent;
-  uint8_t length_level;
   uint8_t length_var;
 
   uint8_t branch_count;
@@ -56,7 +54,7 @@ struct Dna
   uint128 mountenSeed;
   uint128 starSeed;
   uint128 branchSeed;
-  std::array<Branch, MAX_DEPTH> branches;
+  Branch branches[MAX_DEPTH];
 };
 
 void newDna(Dna &dna);