Update relevant documentation

Author: GearsDatapacks

.gitattributes

@@ -1,8 +1,5 @@
 [attr]generated linguist-generated=true diff=generated
 
-# Generate Cap'n Proto code
-compiler-core/generated/schema_capnp.rs generated
-
 # Tests:
 test-package-compiler/src/generated_tests.rs generated
 

CONTRIBUTING.md

@@ -96,16 +96,3 @@ latest stable.
 ```sh
 rustup upgrade stable
 ```
-
-## Cap'n Proto schema
-
-The compiler uses a Cap'n Proto schema to serialize/deserialize module information.
-Occasionally, the schema needs to change. After modifying `compiler-core/schema.capnp`
-you need to re-generate `compiler-core/generated/schema_capnp.rs`. To do that,
-[install Cap'n Proto](https://capnproto.org/install.html) and un-comment appropriate lines
-in `compiler-core/build.rs`. Then you should be able to re-generate that file with:
-
-```sh
-cd compiler-core
-cargo build
-```

Makefile

@@ -53,7 +53,7 @@ javascript-prelude-test-watch: ## Run the JavaScript prelude core tests when fil
 
 .PHONY: test-watch
 test-watch: ## Run compiler tests when files change
-	watchexec -e rs,toml,gleam,html,capnp "cargo test --quiet"
+	watchexec -e rs,toml,gleam,html "cargo test --quiet"
 
 .PHONY: export-hex-tarball-test
 export-hex-tarball-test: ## Run `gleam export hex-tarball` and verify it is created