fix: remove key collision logging

While this log message is nice to have, it's not worth having an
infinite loop over

Alternative solutions:
- Consider renaming colliding field

Fixes LukeMathWalker#33

src/formatting_layer.rs

@@ -212,10 +212,10 @@ impl<W: for<'a> MakeWriter<'a> + 'static> BunyanFormattingLayer<W> {
             if !BUNYAN_REQUIRED_FIELDS.contains(&key.as_str()) {
                 self.serialize_field(&mut map_serializer, key, value)?;
             } else {
-                tracing::debug!(
-                    "{} is a reserved field in the bunyan log format. Skipping it.",
-                    key
-                );
+                // tracing::debug!(
+                //     "{} is a reserved field in the bunyan log format. Skipping it.",
+                //     key
+                // );
             }
         }
 
@@ -225,10 +225,10 @@ impl<W: for<'a> MakeWriter<'a> + 'static> BunyanFormattingLayer<W> {
                 if !BUNYAN_REQUIRED_FIELDS.contains(key) {
                     self.serialize_field(&mut map_serializer, key, value)?;
                 } else {
-                    tracing::debug!(
-                        "{} is a reserved field in the bunyan log format. Skipping it.",
-                        key
-                    );
+                    // tracing::debug!(
+                    //     "{} is a reserved field in the bunyan log format. Skipping it.",
+                    //     key
+                    // );
                 }
             }
         }
@@ -364,10 +364,10 @@ where
                         if !BUNYAN_REQUIRED_FIELDS.contains(key) {
                             self.serialize_field(&mut map_serializer, key, value)?;
                         } else {
-                            tracing::debug!(
-                                "{} is a reserved field in the bunyan log format. Skipping it.",
-                                key
-                            );
+                            // tracing::debug!(
+                            //     "{} is a reserved field in the bunyan log format. Skipping it.",
+                            //     key
+                            // );
                         }
                     }
                 }