Swift: Delete TODOs (move to issues).

Author: geoffw0

swift/ql/lib/codeql/swift/dataflow/internal/DataFlowDispatch.qll

@@ -215,9 +215,6 @@ class PropertyObserverCall extends DataFlowCall, TPropertyObserverCall {
     i = -1 and
     result = observer.getBase()
     or
-    // TODO: This is correct for `willSet` (which takes a `newValue` parameter),
-    // but for `didSet` (which takes an `oldValue` parameter) we need an rvalue
-    // for `getBase()`.
     i = 0 and
     result = observer.getSource()
   }

swift/ql/lib/codeql/swift/dataflow/internal/DataFlowPrivate.qll

@@ -433,8 +433,6 @@ private module ArgumentNodes {
     ObserverArgumentNode() {
       observer.getBase() = this.getCfgNode()
       or
-      // TODO: This should be an rvalue representing the `getBase` when
-      // `observer` a `didSet` observer.
       observer.getSource() = this.getCfgNode()
     }
 
@@ -444,7 +442,6 @@ private module ArgumentNodes {
         pos = TThisArgument() and
         observer.getBase() = this.getCfgNode()
         or
-        // TODO: See the comment above for `didSet` observers.
         pos.(PositionalArgumentPosition).getIndex() = 0 and
         observer.getSource() = this.getCfgNode()
       )