Remove Resampler and its tests

Author: rockdaboot

x-pack/plugin/profiling/src/main/java/org/elasticsearch/xpack/profiling/action/GetStackTracesRequest.java

@@ -398,8 +398,8 @@ public boolean equals(Object o) {
     public int hashCode() {
         // The object representation of `query` may use Lucene's ByteRef to represent values. This class' hashCode implementation
         // uses StringUtils.GOOD_FAST_HASH_SEED which is reinitialized for each JVM. This means that hashcode is consistent *within*
-        // a JVM but will not be consistent across the cluster. As we use hashCode e.g. to initialize the random number generator in
-        // Resampler to produce a consistent downsampling results, relying on the default hashCode implementation of `query` will
+        // a JVM but will not be consistent across the cluster. As we use hashCode to initialize random number generators
+        // to produce consistent downsampling results, relying on the default hashCode implementation of `query` will
         // produce consistent results per node but not across the cluster. To avoid this, we produce the hashCode based on the
         // string representation instead, which will produce consistent results for the entire cluster and across node restarts.
         return Objects.hash(Objects.toString(query, "null"), sampleSize, Arrays.hashCode(indices), stackTraceIdsField);