Remove other/ from exclusion list for package code.

`other/` contains a C smoke test file, that we need to include so that a
user of the crate can actually test the crate without getting errors related
to lack of the file.

Author: NlightNFotis

src/libcprover-rust/Cargo.toml

@@ -6,7 +6,7 @@ description = "Rust API for CBMC and assorted CProver tools"
 repository = "https://github.com/diffblue/cbmc"
 documentation = "https://diffblue.github.io/cbmc/"
 license = "BSD-4-Clause"
-exclude = ["other/", "module_dependencies.txt"]
+exclude = ["module_dependencies.txt"]
 
 # See more keys and their definitions at https://doc.rust-lang.org/cargo/reference/manifest.html