C++: delete some FIXMEs that turned out fine

cpp/ql/lib/semmle/code/cpp/ir/implementation/raw/internal/TranslatedInitialization.qll

@@ -1067,7 +1067,7 @@ class TranslatedConstructorBareInit extends TranslatedElement, TTranslatedConstr
     result = this.getParent().getChildSuccessor(this, kind)
   }
 
-  override Instruction getALastInstructionInternal() { none() } // FIXME: does this need to be filled in?
+  override Instruction getALastInstructionInternal() { none() }
 
   override predicate hasInstruction(Opcode opcode, InstructionTag tag, CppType resultType) {
     none()

cpp/ql/lib/semmle/code/cpp/models/implementations/SmartPointer.qll

@@ -181,7 +181,6 @@ private class SmartPtrDestructor extends Destructor, SideEffectFunction, AliasFu
    * Gets the destructor associated with the base type of this smart pointer.
    */
   private Destructor getBaseTypeDestructor() {
-    // TODO: Check if this is join ordered correctly.
     result.getDeclaringType() = declaringType.getBaseType()
   }
 
@@ -222,4 +221,4 @@ private class SmartPtrDestructor extends Destructor, SideEffectFunction, AliasFu
     // A destructor call does not have a return value
     none()
   }
-}
+}