Dataflow: Use default fieldFlowBranchLimit in qltests.

java/ql/test/library-tests/frameworks/guava/handwritten/flow.ql

@@ -18,8 +18,6 @@ module ValueFlowConfig implements DataFlow::ConfigSig {
   predicate isSink(DataFlow::Node n) {
     exists(MethodCall ma | ma.getMethod().hasName("sink") | n.asExpr() = ma.getAnArgument())
   }
-
-  int fieldFlowBranchLimit() { result = 100 }
 }
 
 module ValueFlow = DataFlow::Global<ValueFlowConfig>;