Ruby: Remove redundant dataflow test

Author: hmac

ruby/ql/test/library-tests/frameworks/json/JsonDataFlow.expected

@@ -29,4 +29,3 @@ nodes
 | json.rb:10:6:10:34 | call to fast_unparse | semmle.label | call to fast_unparse |
 | json.rb:10:24:10:33 | call to source :  | semmle.label | call to source :  |
 subpaths
-#select

ruby/ql/test/library-tests/frameworks/json/JsonDataFlow.ql

@@ -2,11 +2,6 @@
  * @kind path-problem
  */
 
-import codeql.ruby.AST
 import TestUtilities.InlineFlowTest
 import codeql.ruby.Frameworks
 import PathGraph
-
-from DataFlow::PathNode source, DataFlow::PathNode sink, DefaultValueFlowConf conf
-where conf.hasFlowPath(source, sink)
-select sink, source, sink, "$@", source, source.toString()