fix(test): remove duplicate -p flag after rebase onto develop

After rebasing onto develop (which added PR #805's btracePort field and
conditional -p block), the unconditional -p inserted by PR #791 collides
with the conditional block, producing two -p flags when a test sets
btracePort. The btrace CLI rejects the duplicate and prints usage,
causing ExtensionLifecycleIntegrationTest to fail on every JDK.

Drop the unconditional pair from runBTraceDynamic so only the existing
conditional block adds -p when btracePort > 0.

Co-Authored-By: Claude Opus 4.7 (1M context) <noreply@anthropic.com>

Author: jbachorik

integration-tests/src/test/java/tests/RuntimeTest.java

@@ -1303,8 +1303,6 @@ private Process attach(
                 "-cp",
                 cp,
                 "org.openjdk.btrace.boot.Loader",
-                "-p",
-                String.valueOf(getBTracePort()),
                 "-cp",
                 eventsClassPath,
                 "-d",