Delete: 非対応のターゲットを削除 #304

Job	Run time
actionlint	25s
build-and-test-java-api (windows-latest)	10m 48s
build-and-test-python-api (windows-latest)	12m 17s
build-and-test-java-api (macos-latest)	5m 44s
build-and-test-python-api (macos-latest)	7m 44s
build-and-test-java-api (ubuntu-latest)	5m 16s
build-unix-cpp-example (macos-latest, osx-x64-cpu-cpp-shared)	3m 57s
build-and-test-python-api (ubuntu-latest)	4m 28s
build-windows-cpp-example	9m 6s
build-unix-cpp-example (ubuntu-latest, linux-x64-cpu-cpp-shared)	2m 33s
c-header	1m 12s
rust-integration-test-strategy-matrix	4s
rust-lint	9m 13s
rust-unit-test	4m 21s
shellcheck	16s
validate-cargo-lock	24s
rust-integration-test (windows-2019, directml)	4m 35s
rust-integration-test (macos-11)	6m 40s
rust-integration-test (ubuntu-20.04)	1m 38s
	1h 30m 41s

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