Remove unused method (badge_type)

Author: Andronik Ordian

src/badge.rs

@@ -58,18 +58,6 @@ impl Badge {
         serde_json::from_value(serde_json::to_value(self).unwrap()).unwrap()
     }
 
-    pub fn badge_type(&self) -> &'static str {
-        match *self {
-            Badge::TravisCi { .. } => "travis-ci",
-            Badge::Appveyor { .. } => "appveyor",
-            Badge::GitLab { .. } => "gitlab",
-            Badge::IsItMaintainedIssueResolution { .. } => "is-it-maintained-issue-resolution",
-            Badge::IsItMaintainedOpenIssues { .. } => "is-it-maintained-open-issues",
-            Badge::Codecov { .. } => "codecov",
-            Badge::Coveralls { .. } => "coveralls",
-        }
-    }
-
     pub fn update_crate<'a>(
         conn: &PgConnection,
         krate: &Crate,