Update FindBugs Exclude Filter in tools/

tools/FindBugsExcludeFilter.xml

@@ -1,25 +1,10 @@
-<FindBugsFilter> <!-- sketches-core -->
+<FindBugsFilter> <!-- memory -->
 
   <!-- Too many false positives to be useful.  I could not make it happy :( -->
   <Match>
     <Bug pattern="SF_SWITCH_NO_DEFAULT" />
   </Match>
 
-  <!-- False positive.  FindBugs complains if DQS_RESIZE_THRESHOLD == REBUILD_THRESHOLD, 
-       but this allows us to tune these constants for different sketches. -->
-  <Match>
-    <Bug pattern="DB_DUPLICATE_BRANCHES" />
-    <Class name="com.yahoo.sketches.theta.DirectQuickSelectSketch" />
-    <Method name="setHashTableThreshold" />
-  </Match>
-
-  <!-- False positive.  In this case we want to ignore the exceptions -->
-  <Match>
-    <Bug pattern="DE_MIGHT_IGNORE" />
-    <Class name="com.yahoo.sketches.theta.PairwiseCornerCasesTest" />
-    <Method name="checkNotOrdered" />
-  </Match>
-
   <Match>   <!-- Exclude for test classes; too many False Positives. -->
     <Bug pattern="NP_NULL_PARAM_DEREF_NONVIRTUAL" />
     <Class name="~.*\.*Test" />