[board] Fix two build errors

board/src/position/flags.rs

@@ -34,7 +34,7 @@ impl Default for Flags {
 #[cfg(test)]
 mod tests {
     use super::*;
-    use crate::Color;
+    use crate::piece::Color;
 
     #[test]
     fn castle_flags() {

board/src/position/position.rs

@@ -271,8 +271,4 @@ mod tests {
             .place_piece(piece, square)
             .expect_err("Placed white queen on e4 a second time?!");
     }
-
-    #[test]
-
-    }
 }