Cleanup RT a bit more

Author: AlexeySachkov

sycl/source/detail/program_impl.cpp

@@ -507,17 +507,6 @@ void program_impl::create_pi_program_with_kernel_name(
   MProgram = PM.createPIProgram(Img, get_context(), {FirstDevice});
 }
 
-void program_impl::set_spec_constant_impl(const char *Name, const void *ValAddr,
-                                          size_t ValSize) {
-  if (MState != program_state::none)
-    throw sycl::ext::oneapi::experimental::spec_const_error(
-        "Invalid program state", PI_ERROR_INVALID_PROGRAM);
-  // Reuse cached programs lock as opposed to introducing a new lock.
-  auto LockGuard = MContext->getKernelProgramCache().acquireCachedPrograms();
-  spec_constant_impl &SC = SpecConstRegistry[Name];
-  SC.set(ValSize, ValAddr);
-}
-
 void program_impl::flush_spec_constants(const RTDeviceBinaryImage &Img,
                                         RT::PiProgram NativePrg) const {
   // iterate via all specialization constants the program's image depends on,

sycl/source/detail/program_impl.hpp

@@ -306,9 +306,6 @@ class program_impl {
   /// \return the current state of this SYCL program.
   program_state get_state() const { return MState; }
 
-  void set_spec_constant_impl(const char *Name, const void *ValAddr,
-                              size_t ValSize);
-
   /// Takes current values of specialization constants and "injects" them into
   /// the underlying native program program via specialization constant
   /// managemment PI APIs. The native program passed as non-null argument