C++: Fix ql-for-ql findings.

cpp/ql/lib/utils/test/InlineMadTest.qll

@@ -9,7 +9,7 @@ private module InlineMadTestLang implements InlineMadTestLangSig {
   class Callable = MadRelevantFunction;
 
   /**
-   * Holds if `c` is the closest `Callable` that suceeds `comment` in the file.
+   * Holds if `c` is the closest `Callable` that succeeds `comment` in the file.
    */
   private predicate hasClosestCallable(CppStyleComment comment, Callable c) {
     c =

cpp/ql/src/utils/modelgenerator/internal/CaptureModels.qll

@@ -3,7 +3,6 @@
  */
 
 private import cpp
-private import semmle.code.cpp.dataflow.new.DataFlow
 private import semmle.code.cpp.ir.IR
 private import semmle.code.cpp.dataflow.ExternalFlow as ExternalFlow
 private import semmle.code.cpp.ir.dataflow.internal.DataFlowImplCommon as DataFlowImplCommon