Revert "Merge branch 'batch-limit' of https://github.com/biothings/bt…

…e_trapi_query_graph_handler into dev"

This reverts commit fcd12ce, reversing
changes made to cfeb7a7.

src/query_graph.ts

@@ -57,14 +57,6 @@ export default class QueryGraph {
     }
   }
 
-  _validateBatchSize(queryGraph: TrapiQueryGraph): void {
-    Object.entries(queryGraph.nodes).forEach(([nodeID, node]) => {
-      if (node.ids.length > 150) {
-        throw new InvalidQueryGraphError(`Query node ${nodeID} exceeds batch size limit.`);
-      }
-    });
-  }
-
   _validateDuplicateEdges(queryGraph: TrapiQueryGraph): void {
     const edgeSet = new Set();
     for (const edgeID in queryGraph.edges) {
@@ -190,7 +182,6 @@ export default class QueryGraph {
     this._validateDuplicateEdges(queryGraph);
     this._validateNodeProperties(queryGraph);
     this._validateEdgeProperties(queryGraph);
-    this._validateBatchSize(queryGraph);
     this._validateCycles(queryGraph);
     this._validateNoDuplicateQualifierTypes(queryGraph);
   }