Can I delete pointers in destructor when stored in std::vector property?

I don't want to use smart pointers.

Her'es my code.

CCOLFile *pCOLFile = CCOLManager::getInstance()->parseFile(strCOLPath); // returns instance of CCOLFile
// ...
pCOLFile->unload(); // hoping to comment this out, and use destructor instead.
delete pCOLFile;

struct CCOLFile
{
    std::string                     m_strFilePath;
    std::vector<CCOLEntry*>         m_vecEntries;
};

void                CCOLFile::unload(void)
{
    for (auto pCOLEntry : m_vecEntries)
    {
        delete pCOLEntry;
    }
    m_vecEntries.clear();
}

Is it safe in c++ to comment my call to CCOLFile::unload, and then move the code from the CCOLFile::unload method to the CCOLFile destructor?