remove various left-over 'patch.crates-io' sections

I had left various patch sections in Cargo.toml for local development
branches of dependencies I test with.

Author: rib

agdk-mainloop/Cargo.lock

@@ -20,8 +20,3 @@ jni = "0.22"
 [lib]
 name = "main"
 crate-type = ["cdylib"]
-
-[patch.crates-io]
-android-activity = { path = "../../android-activity/android-activity" }
-jni = { path = "../../../../jni-rs/jni-git-dev0/crates/jni" }
-jni-macros = { path = "../../../../jni-rs/jni-git-dev0/crates/jni-macros" }