Strip out old code

All of these files have been moved to either:

- https://github.com/sigp/lighthouse-beacon
- https://github.com/sigp/lighthouse-validator
- https://github.com/sigp/lighthouse-common

For rationale, see: https://github.com/sigp/lighthouse/issues/197

beacon_node/src/config/mod.rs

@@ -1,30 +0,0 @@
-use std::fs;
-use std::path::PathBuf;
-
-/// Stores the core configuration for this Lighthouse instance.
-/// This struct is general, other components may implement more
-/// specialized config structs.
-#[derive(Clone)]
-pub struct LighthouseConfig {
-    pub data_dir: PathBuf,
-    pub p2p_listen_port: u16,
-}
-
-const DEFAULT_LIGHTHOUSE_DIR: &str = ".lighthouse";
-
-impl LighthouseConfig {
-    /// Build a new lighthouse configuration from defaults.
-    pub fn default() -> Self {
-        let data_dir = {
-            let home = dirs::home_dir().expect("Unable to determine home dir.");
-            home.join(DEFAULT_LIGHTHOUSE_DIR)
-        };
-        fs::create_dir_all(&data_dir)
-            .unwrap_or_else(|_| panic!("Unable to create {:?}", &data_dir));
-        let p2p_listen_port = 0;
-        Self {
-            data_dir,
-            p2p_listen_port,
-        }
-    }
-}