[position] Remove the rook_push_mask test from check.rs

This test now lives in move_generator::tests::peterellisjones

position/src/check.rs

@@ -71,27 +71,3 @@ impl CheckingPieces {
         &self.bitboards[shape as usize]
     }
 }
-
-#[cfg(test)]
-mod tests {
-    use super::*;
-    use chessfriend_bitboard::{bitboard, BitBoard};
-
-    /// This is a test position from [this execellent blog post][1] about how to
-    /// efficiently generate legal chess moves.
-    ///
-    /// [1]: https://peterellisjones.com/posts/generating-legal-chess-moves-efficiently/
-    #[test]
-    fn rook_push_mask() {
-        let checks = CheckingPieces::new(
-            BitBoard::EMPTY,
-            BitBoard::EMPTY,
-            BitBoard::EMPTY,
-            bitboard![E5],
-            BitBoard::EMPTY,
-        );
-
-        let push_mask = checks.push_mask(&bitboard![E8]);
-        assert_eq!(push_mask, bitboard![E6, E7]);
-    }
-}