openwebui: drop the Intel oneAPI Base Toolkit (#18098)

The Ollama release binaries carry no SYCL build, so the 2.8 GB download
was never used. Its handled failure was also what later systemctl
failures were reported as.

install/openwebui-install.sh

@@ -96,10 +96,6 @@ EOF
     }
   fi
   msg_ok "Installed Intel® Level Zero"
-
-  msg_info "Installing Intel® oneAPI Base Toolkit (Patience)"
-  $STD apt install -y --no-install-recommends intel-basekit-2024.1 2>/dev/null || true
-  msg_ok "Installed Intel® oneAPI Base Toolkit"
   fi
 
   msg_info "Installing Ollama"