Revert "more review stuff"

This reverts commit b95f3889bb.

This is WIP and does not compile right now. See branch `review`.

src/backend/actual/pacman.rs

@@ -67,10 +67,6 @@ impl Backend for Pacman {
         cmd.status()
             .with_context(|| format!("running command [{cmd:?}]"))
     }
-
-    fn supports_assigning_packages_as_dependency(&self) -> bool {
-        true
-    }
 }
 
 fn get_all_installed_packages_from_alpm() -> Result<HashSet<String>> {

src/backend/actual/rust.rs

@@ -31,10 +31,6 @@ impl Backend for Rust {
         self.get_all_installed_packages()
             .context("getting all installed packages")
     }
-
-    fn supports_assigning_packages_as_dependency(&self) -> bool {
-        false
-    }
 }
 
 fn extract_packages(json: Value) -> Result<HashSet<Package>> {

src/backend/backend_trait.rs

@@ -33,8 +33,6 @@ pub(crate) trait Backend {
             .with_context(|| format!("running command {cmd:?}"))
     }
 
-    fn supports_assigning_packages_as_dependency(&self) -> bool;
-
     /// Remove the specified packages.
     fn remove_packages(&self, packages: &[Package]) -> Result<ExitStatus> {
         let mut cmd = Command::new(self.get_binary());