C++: Remove [FALSE POSITIVE] annotations

Author: MathiasVP

cpp/ql/test/library-tests/dataflow/DefaultTaintTracking/defaulttainttracking.cpp

@@ -115,5 +115,5 @@ void test_conflated_fields3() {
   XY xy;
   xy.x = 0;
   taint_y(&xy);
-  sink(xy.x); // not tainted [FALSE POSITIVE]
+  sink(xy.x); // not tainted
 }

cpp/ql/test/query-tests/Security/CWE/CWE-190/semmle/TaintedAllocationSize/field_conflation.c

@@ -17,5 +17,5 @@ void test_conflated_fields3(void) {
   struct XY xy;
   xy.x = 4;
   taint_array(&xy);
-  malloc(xy.x); // not tainted [FALSE POSITIVE]
+  malloc(xy.x); // not tainted
 }