Remove ContentTypeDecode error variant

src/error.rs

@@ -36,8 +36,6 @@ pub enum GolgiError {
     Sbot(String),
     /// JSON serialization or deserialization error.
     SerdeJson(JsonError),
-    /// Error decoding typed ssb message from content.
-    ContentTypeDecode(String),
     /// Error decoding UTF8 string from bytes
     Utf8Parse {
         /// The underlying parse error.
@@ -56,7 +54,6 @@ impl std::error::Error for GolgiError {
             GolgiError::Rpc(ref err) => Some(err),
             GolgiError::Sbot(_) => None,
             GolgiError::SerdeJson(ref err) => Some(err),
-            GolgiError::ContentTypeDecode(_) => None,
             GolgiError::Utf8Parse{ ref source} => Some(source),
         }
     }
@@ -77,11 +74,6 @@ impl std::fmt::Display for GolgiError {
             GolgiError::Sbot(ref err) => write!(f, "Sbot returned an error response: {}", err),
             GolgiError::SerdeJson(_) => write!(f, "Failed to serialize JSON slice"),
             //GolgiError::WhoAmI(ref err) => write!(f, "{}", err),
-            GolgiError::ContentTypeDecode(ref err) => write!(
-                f,
-                "Failed to decode typed message from ssb message content: {}",
-                err
-            ),
             GolgiError::Utf8Parse{ source } => write!(f, "Failed to deserialize UTF8 from bytes: {}", source),
         }
     }