Remove now redundant code from nodes

Author: TimPansino

newrelic/core/database_node.py

@@ -288,7 +288,4 @@ def span_event(self, *args, **kwargs):
 
         self.agent_attributes["db.statement"] = sql
 
-        if self.target:
-            self.agent_attributes["db.collection"] = self.target
-
         return super(DatabaseNode, self).span_event(*args, **kwargs)

newrelic/core/datastore_node.py

@@ -136,12 +136,3 @@ def trace_node(self, stats, root, connections):
         return newrelic.core.trace_node.TraceNode(
             start_time=start_time, end_time=end_time, name=name, params=params, children=children, label=None
         )
-
-    def span_event(self, *args, **kwargs):
-        if self.operation:
-            self.agent_attributes["db.operation"] = self.operation
-
-        if self.target:
-            self.agent_attributes["db.collection"] = self.target
-
-        return super(DatastoreNode, self).span_event(*args, **kwargs)