Remove unused lambda capture

See https://gitlab.com/Manu343726/tinyrefl/-/jobs/99158574

Author: Manu343726

src/filters.cpp

@@ -665,7 +665,7 @@ InternalValue SequenceAccessor::Filter(const InternalValue& baseVal, RenderConte
         });
         items.erase(end, items.end());
 
-        std::sort(items.begin(), items.end(), [&compType](auto& i1, auto& i2) {
+        std::sort(items.begin(), items.end(), [](auto& i1, auto& i2) {
             return i1.idx < i2.idx;
         });