remove double list comprehension

comp'ing a list in a list comp will cause the comp'ing to happen for
every item in the comp.

truvari/collapse.py

@@ -154,7 +154,8 @@ def collapse_chunk(chunk, matcher):
             m_collap.matches = [mats.pop(0)]
 
         # Remove everything that was used
-        remaining_calls = [_ for _ in remaining_calls if _ not in [_.comp for _ in m_collap.matches]]
+        to_rm = [_.comp for _ in m_collap.matches]
+        remaining_calls = [_ for _ in remaining_calls if _ not in to_rm]
 
     if matcher.no_consolidate:
         for val in ret: