Adjust docs

Author: VladasZ

DEVELOPMENT.md

@@ -11,8 +11,6 @@
 - **cargo-kotars:** A tool to run autogenerated bindings from Rust to Kotlin. You can install it using
   `cargo install cargo-kotars --git https://github.com/JetpackDuba/kotars`.
   NOTE: Make sure cargo-kotars is in your path, otherwise Gitnuro's build will fail.
-- **Enable Rust Nightly:** Kotars uses some nightly features to generate the binding for Gitnuro. Install nightly rust
-  with `rustup toolchain install nightly` and enable it as default with `rustup default nightly`.
 - **Perl:** Perl is required to build openssl (which is required for LibSSH to work).
 - **Packages for Linux ARM64/aarch64**: You need to install the `aarch64-linux-gnu-gcc` package to cross compile the
   Rust components to ARM from x86_64. You will also need to use `rustup` to add a new