Add 3 outliers to cattle-flu build

The metadata of the dropped strains warrants further investigation,
but dropping for now as they completely throw the tree.

First identified on SPHERES slack, see
<https://bedfordlab.slack.com/archives/CD84ELG0N/p1724894057669049>
for more.

config/h5n1-cattle-outbreak/dropped_strains_h5n1-cattle-outbreak.txt

@@ -17,6 +17,12 @@ A/domesticcat/NewMexico/24-009116-001/2024
 # These strains are basal to the outbreak and we exclude them to avoid low-confidence DTA reconstruction.
 A/Peregrinefalcon/California/24-005915-001/2024
 
+# These three cattle strains are hundreds of mutations diverged from the outbreak - perhaps due to poor sequencing?
+# Perhaps they are another introduction? Dropping for now
+A/CATTLE/USA/24-022332-005/2024
+A/CATTLE/USA/24-015672-001/2024
+A/CATTLE/USA/24-022332-007/2024
+
 # These strains represent diversity that's significantly outgrouped relative to cattle outbreak
 A/americancrow/Iowa/24-006634-001/2024
 A/AmericanCrow/USA/24-004479-001-original/2024