Removed the "std" feature as a dependency of the "derive" feature.

As pointed out by @the10thWiz, this dependency was not necessary and removing it adds flexibility.

Co-authored-by: Matthew Pomes <matthew.pomes@pm.me>

Cargo.toml

@@ -47,7 +47,7 @@ std = ["alloc"]
 alloc = []
 
 # Provides a `derive` macro for implementing the `Transient` trait
-derive = ["std", "transient-derive"]
+derive = ["transient-derive"]
 
 # Provides `Transient` implementations for `ndarray` types
 ndarray = ["dep:ndarray"]