PY: remove leftover comments

Author: erik-krogh

python/ql/lib/semmle/python/dataflow/old/Configuration.qll

@@ -119,8 +119,6 @@ module TaintTracking {
       this.(TaintTrackingImplementation).hasFlowPath(src, sink)
     }
 
-    /* Old query API */
-    /* deprecated */
     /* New query API */
     predicate hasSimpleFlow(DataFlow::Node src, DataFlow::Node sink) {
       exists(PathSource psrc, PathSink psink |

python/ql/lib/semmle/python/dataflow/old/Legacy.qll

@@ -2,7 +2,6 @@ import semmle.python.dataflow.TaintTracking
 private import semmle.python.objects.ObjectInternal
 import semmle.python.dataflow.Implementation
 
-/* For backwards compatibility -- Use `TaintTrackingContext` instead. */
 /* Backwards compatibility with config-less taint-tracking */
 private class LegacyConfiguration extends TaintTracking::Configuration {
   LegacyConfiguration() {

python/ql/lib/semmle/python/essa/Essa.qll

@@ -494,8 +494,6 @@ private EssaVariable potential_input(EssaNodeRefinement ref) {
   )
 }
 
-/* For backwards compatibility */
-/* For backwards compatibility */
 /** An assignment to a variable `v = val` */
 class AssignmentDefinition extends EssaNodeDefinition {
   AssignmentDefinition() {