chore: normalize lnmp naming & cleanup

Author: Madraka

Cargo.toml

@@ -7,6 +7,4 @@ authors = ["LNMP Contributors"]
 [dependencies]
 lnmp-core = { path = "../lnmp-protocol/crates/lnmp-core" }
 
-# If your local workspace still uses the older folder name, uncomment the
-# following line to use `lnpm-protocol` instead:
-# lnmp-core = { path = "../lnpm-protocol/crates/lnmp-core" }
+# If you use a local copy of lnmp-protocol, ensure it is named `lnmp-protocol` in the parent folder.