Remove include_webtransport_h3 from TestLoader

This is never used by TestLoader for filtering tests. Unlike
include_https and include_h2 which have manifest metadata, we have no
such flag to filter tests using WebTransport, and it seems unlikely
we're going to add such a flag.

Author: gsnedders

tools/wptrunner/wptrunner/testloader.py

@@ -364,7 +364,6 @@ def __init__(self,
                  chunk_number=1,
                  include_https=True,
                  include_h2=True,
-                 include_webtransport_h3=False,
                  skip_timeout=False,
                  skip_crash=False,
                  skip_implementation_status=None,
@@ -382,7 +381,6 @@ def __init__(self,
         self.disabled_tests = None
         self.include_https = include_https
         self.include_h2 = include_h2
-        self.include_webtransport_h3 = include_webtransport_h3
         self.skip_timeout = skip_timeout
         self.skip_crash = skip_crash
         self.skip_implementation_status = skip_implementation_status

tools/wptrunner/wptrunner/wptrunner.py

@@ -121,7 +121,6 @@ def get_loader(test_paths: wptcommandline.TestPaths,
                                         chunk_number=kwargs["this_chunk"],
                                         include_https=ssl_enabled,
                                         include_h2=h2_enabled,
-                                        include_webtransport_h3=kwargs["enable_webtransport_h3"],
                                         skip_timeout=kwargs["skip_timeout"],
                                         skip_crash=kwargs["skip_crash"],
                                         skip_implementation_status=kwargs["skip_implementation_status"],