fix(factor): move N_INF import to test module in team_sum

src/factor/team_sum.rs

@@ -1,5 +1,5 @@
 use crate::{
-    N_INF, N00,
+    N00,
     factor::{Factor, VarId, VarStore},
     gaussian::Gaussian,
 };
@@ -27,6 +27,7 @@ impl Factor for TeamSumFactor {
 #[cfg(test)]
 mod tests {
     use super::*;
+    use crate::N_INF;
 
     #[test]
     fn single_player_unit_weight() {