src: remove unused node_dtrace.h from node_win32

This commit removes the inclusion of node_dtrace.h from
node_win32_etw_provider.cc. I was not expecting to find it in a windows
source file and could not find any usage of it.

PR-URL: https://github.com/nodejs/node/pull/15768
Reviewed-By: Ben Noordhuis <info@bnoordhuis.nl>
Reviewed-By: Minwoo Jung <minwoo@nodesource.com>
Reviewed-By: Luigi Pinca <luigipinca@gmail.com>

src/node_win32_etw_provider.cc

@@ -19,7 +19,6 @@
 // OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE
 // USE OR OTHER DEALINGS IN THE SOFTWARE.
 
-#include "node_dtrace.h"
 #include "node_win32_etw_provider.h"
 #include "node_etw_provider.h"
 #include "node_win32_etw_provider-inl.h"