don't hardcode span type to serverless (#1149)

Author: duncanpharvey

datadog-trace-utils/src/span/trace_utils.rs

@@ -193,7 +193,6 @@ mod tests {
             span.meta.insert("origin".into(), "cloudfunction".into());
             span.meta
                 .insert("functionname".into(), "dummy_function_name".into());
-            span.r#type = "serverless".into();
         }
         span
     }

datadog-trace-utils/src/test_utils/mod.rs

@@ -123,7 +123,6 @@ pub fn create_test_span(
             "functionname".to_string(),
             "dummy_function_name".to_string(),
         );
-        span.r#type = "serverless".to_string();
     }
     span
 }
@@ -185,7 +184,6 @@ pub fn create_test_gcp_span(
             .insert("_dd.origin".to_string(), "cloudfunction".to_string());
         span.meta
             .insert("origin".to_string(), "cloudfunction".to_string());
-        span.r#type = "serverless".to_string();
     }
     span
 }

datadog-trace-utils/src/trace_utils.rs

@@ -436,7 +436,6 @@ pub fn set_serverless_root_span_tags(
     app_name: Option<String>,
     env_type: &EnvironmentType,
 ) {
-    span.r#type = "serverless".to_string();
     let origin_tag = match env_type {
         EnvironmentType::CloudFunction => "cloudfunction",
         EnvironmentType::AzureFunction => "azurefunction",
@@ -1043,7 +1042,6 @@ mod tests {
                 ("service".to_string(), "test-service".to_string())
             ]),
         );
-        assert_eq!(span.r#type, "serverless".to_string())
     }
 
     #[test]
@@ -1068,7 +1066,6 @@ mod tests {
                 ("service".to_string(), "test-service".to_string())
             ]),
         );
-        assert_eq!(span.r#type, "serverless".to_string())
     }
 
     #[test]