Remove error flags from boto_utils (#11)

Error flags are already handled by the Entity class, so they're
redundant here.

Author: Dunedan

aws_xray_sdk/ext/boto_utils.py

@@ -69,11 +69,6 @@ def _aws_error_handler(exception, stack, subsegment, aws_meta):
     status_code = response_metadata.get('HTTPStatusCode')
 
     subsegment.put_http_meta(http.STATUS, status_code)
-    if status_code == 429:
-        subsegment.add_throttle_flag()
-    if status_code / 100 == 4:
-        subsegment.add_error_flag()
-
     subsegment.add_exception(exception, stack, True)
 
 
@@ -131,4 +126,4 @@ def _process_descriptor(descriptor, value, aws_meta):
     if 'get_keys' in descriptor and descriptor['get_keys']:
         value = value.keys()
 
-    aws_meta[descriptor['rename_to']] = value
+    aws_meta[descriptor['rename_to']] = value