Remove the use-flutter configuration #1034

Job	Run time
mono_repo self validate	13s
analyze_and_format; Dart 3.4.0; PKGS: pkgs/dart_flutter_team_lints, pkgs/sdk_triage_bot; `dart an...	24s
analyze_and_format; Dart dev; PKGS: pkgs/corpus, pkgs/dart_flutter_team_lints, pkgs/firehose, pkg...	23s
analyze_and_format; Dart 3.1.0; PKGS: pkgs/corpus, pkgs/firehose, pkgs/repo_manage; `dart analyze...	28s
analyze_and_format; Dart dev; PKGS: pkgs/corpus, pkgs/dart_flutter_team_lints, pkgs/firehose, pkg...	33s
unit_test; Dart 3.1.0; PKG: pkgs/firehose; `dart test`	1m 57s
unit_test; Dart 3.1.0; PKG: pkgs/corpus; `dart test`	41s
unit_test; Dart 3.4.0; PKG: pkgs/dart_flutter_team_lints; `dart test`	26s
unit_test; Dart 3.4.0; PKG: pkgs/sdk_triage_bot; `dart test`	24s
unit_test; Dart dev; PKG: pkgs/corpus; `dart test`	31s
unit_test; Dart dev; PKG: pkgs/dart_flutter_team_lints; `dart test`	21s
unit_test; Dart dev; PKG: pkgs/firehose; `dart test`	1m 26s
unit_test; Dart dev; PKG: pkgs/sdk_triage_bot; `dart test`	26s
analyze_format; Dart dev; PKG: pkgs/blast_repo; `dart format --output=none --set-exit-if-changed ...	0s
test; Dart dev; PKG: pkgs/blast_repo; `dart test --test-randomize-ordering-seed=random`	0s
	8m 13s

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