[CLEANUP] Remove an unused flag

Test Plan: Jenkins

Reviewers: #stirling, oazizi

Reviewed By: #stirling, oazizi
Signed-off-by: yzhao1012 <yzhao@pixielabs.ai>

Differential Revision: https://phab.corp.pixielabs.ai/D10530

GitOrigin-RevId: 48fe2de8b4390865f5ae862629bb01cdd490820e

src/stirling/source_connectors/socket_tracer/protocols/http2/http2_streams_container.cc

@@ -20,10 +20,6 @@
 
 #include <algorithm>
 
-DEFINE_uint32(stirling_http2_stream_id_gap_threshold, 100,
-              "If a stream ID jumps by this many spots or more, an error is assumed and the entire "
-              "connection info is cleared.");
-
 namespace px {
 namespace stirling {