Grand culling

Deleting a bunch of old code related to the old way the interpreter
worked

robo/src/lib.rs

@@ -4,7 +4,7 @@ extern crate itertools;
 extern crate schala_repl;
 
 use itertools::Itertools;
-use schala_repl::{ProgrammingLanguageInterface, EvalOptions, FinishedComputation, UnfinishedComputation};
+use schala_repl::{ProgrammingLanguageInterface, EvalOptions}; 
 
 pub struct Robo {
 }
@@ -154,17 +154,5 @@ impl ProgrammingLanguageInterface for Robo {
   fn get_source_file_suffix(&self) -> String {
     format!("robo")
   }
-
-  fn execute_pipeline(&mut self, input: &str, _eval_options: &EvalOptions) -> FinishedComputation {
-    let output = UnfinishedComputation::default();
-    let tokens = match tokenize(input) {
-      Ok(tokens) => tokens,
-      Err(e) => {
-        return output.finish(Err(format!("Tokenize error: {:?}", e)));
-      }
-    };
-
-    output.finish(Ok(format!("{:?}", tokens)))
-  }
 }