Harmony HttpsURLConnectionTest: Use platform default TLS version.

Cherry-pick Note: Backporting to CTS branches from 12 onwards to ensure no dependencies on TLS v1.x.

This test was downgraded from using TLS 1.2 to TLSv1 over 10
years ago in change I5d829211c9e1d5672fc96e42ef603c53d789e695.
That no longer seems like the correct thing to do, so simply
use the platform default.

Bug: 288058920
Test: atest CtsLibcoreTestCases:org.apache.harmony.luni.tests.internal.net.www.protocol.https.HttpsURLConnectionTest
Change-Id: Ibaa81136162a906fbde4ba1d2981920756aae7d8
Merged-In: Ibaa81136162a906fbde4ba1d2981920756aae7d8
(cherry picked from commit ca73be67118f4ca1a5f6def1fd20b9ffbc8dade1)