fix(build): remove the musl note from the docs as it is no longer nec…

…essary

book/src/install.md

@@ -151,13 +151,6 @@ This command will create the `hx` executable and construct the tree-sitter
 grammars in the local `runtime` folder. To build the tree-sitter grammars requires
 a c++ compiler to be installed, for example `gcc-c++`.
 
-> 💡 If you are using the musl-libc instead of glibc the following environment variable must be set during the build
-> to ensure tree-sitter grammars can be loaded correctly:
->
-> ```sh
-> RUSTFLAGS="-C target-feature=-crt-static"
-> ```
-
 > 💡 Tree-sitter grammars can be fetched and compiled if not pre-packaged. Fetch
 > grammars with `hx --grammar fetch` (requires `git`) and compile them with
 > `hx --grammar build` (requires a C++ compiler). This will install them in