[SYCL][NFC] Remove misplaced comment (#19655)

Author: sergey-semenov

sycl/source/detail/program_manager/program_manager.hpp

@@ -440,7 +440,6 @@ class ProgramManager {
 
   // Maps KernelIDs to device binary images. There can be more than one image
   // in case of SPIRV + AOT.
-  // Using shared_ptr to avoid expensive copy of the vector.
   /// Access must be guarded by the m_KernelIDsMutex mutex.
   std::unordered_multimap<kernel_id, const RTDeviceBinaryImage *>
       m_KernelIDs2BinImage;