🛠️ fix: remove unnecessary feature `hybrid` (#244)

Cargo.toml

@@ -71,4 +71,3 @@ default = ["memory-cache"]
 dhat-heap = ["dep:dhat"] 
 memory-cache = ["dep:mini-moka"]
 redis-cache = ["dep:redis"]
-hybrid-cache = ["memory-cache", "redis-cache"]