fix: remove openssl dependency and unused functions

Author: rustyconover

.github/workflows/_extension_deploy.yml

@@ -4,7 +4,6 @@ set(TARGET_NAME chsql)
 # DuckDB's extension distribution supports vcpkg. As such, dependencies can be added in ./vcpkg.json and then
 # used in cmake with find_package. Feel free to remove or replace with other dependencies.
 # Note that it should also be removed from vcpkg.json to prevent needlessly installing it..
-find_package(OpenSSL REQUIRED)
 set(EXTENSION_NAME ${TARGET_NAME}_extension)
 set(LOADABLE_EXTENSION_NAME ${TARGET_NAME}_loadable_extension)
 project(${TARGET_NAME})