Revert "Just for testing, let importing the db always fail - .context() just overwrites the underlying error!!!!!"

This reverts commit 27e53ddbff.

src/sql.rs

@@ -96,15 +96,6 @@ impl Sql {
         res.map_err(|e| format_err!("Could not open db: {}", e))
     }
 
-    pub async fn openh<T: AsRef<Path>>(
-        &self,
-        context: &Context,
-        dbfile: T,
-        readonly: bool,
-    ) -> crate::error::Result<()> {
-        Err(format_err!("This is the actual error the user should see"))
-    }
-
     pub async fn execute<S: AsRef<str>>(
         &self,
         sql: S,