Remove support for requests not made through dart:io Sockets #345

Job	Run time
analyze_and_format; linux; Dart 3.0.0; PKGS: pkgs/shelf, pkgs/shelf_packages_handler, pkgs/shelf_...	42s
mono_repo self validate	19s
analyze_and_format; linux; Dart dev; PKGS: pkgs/shelf, pkgs/shelf_packages_handler, pkgs/shelf_pr...	38s
analyze_and_format; linux; Dart dev; PKGS: pkgs/shelf, pkgs/shelf_packages_handler, pkgs/shelf_pr...	33s
unit_test; linux; Dart 3.0.0; PKGS: pkgs/shelf, pkgs/shelf_test_handler; `dart test --test-random...	1m 39s
unit_test; linux; Dart dev; PKGS: pkgs/shelf, pkgs/shelf_test_handler; `dart test --test-randomiz...	1m 16s
unit_test; linux; Dart 3.0.0; PKGS: pkgs/shelf, pkgs/shelf_packages_handler, pkgs/shelf_proxy, pk...	1m 50s
unit_test; linux; Dart dev; PKGS: pkgs/shelf, pkgs/shelf_test_handler; `dart test --test-randomiz...	43s
unit_test; linux; Dart dev; PKGS: pkgs/shelf, pkgs/shelf_packages_handler, pkgs/shelf_proxy, pkgs...	1m 19s
unit_test; linux; Dart dev; PKG: pkgs/shelf_router_generator; `dart test --run-skipped -t presubm...	52s
unit_test; windows; Dart 3.0.0; PKGS: pkgs/shelf, pkgs/shelf_test_handler; `dart test --test-rand...	2m 54s
unit_test; windows; Dart 3.0.0; PKGS: pkgs/shelf_packages_handler, pkgs/shelf_static, pkgs/shelf_...	1m 17s
unit_test; windows; Dart dev; PKGS: pkgs/shelf, pkgs/shelf_test_handler; `dart test --test-random...	1m 53s
unit_test; windows; Dart dev; PKGS: pkgs/shelf_packages_handler, pkgs/shelf_static, pkgs/shelf_te...	58s
	16m 53s

Provide feedback