Remove links field

> This manifest states that the package links to the libfoo native library. When using the links key, the package must have a build script, and the build script should use the rustc-link-lib instruction to link the library.

https://doc.rust-lang.org/cargo/reference/build-scripts.html#the-links-manifest-key

Cargo.toml

@@ -9,7 +9,6 @@ homepage = "https://github.com/vita-rust/vitasdk-sys"
 description = "Raw bindings to vitasdk"
 keywords = ["vitasdk", "psvita", "vita", "ffi"]
 categories = ["external-ffi-bindings"]
-links = "vitasdk_stubs"
 exclude = [".gitmodules", ".gitignore"]
 
 [workspace]