Use jniThrowErrnoException from JNIHelp

Use the jniThrowErrnoException that is available in JNIHelp, instead of
reimplementing in NetworkUtils.

Bug: 179229316
Test: device boots and has connectivity
Change-Id: I257a9d55ce1f5a7c588e209b4a89d3e7a3e09994
1 file changed
tree: 854ecaa111ed4c829af3a60cc4a8cdfd8413dea8
  1. framework/
  2. service/
  3. services/
  4. tests/
  5. OWNERS