delete legacy PM usage

[FinleyTang]

when enable legacy PassManager with the following command: opt-17 -enable-new-pm=0 -load ./libHelloWorld.so -legacy-hello-world -disable-output input_for_hello.ll there is an error: opt-17: Unknown command line argument '-enable-new-pm=0'. Try: 'opt-17 --help'，

using --bugpoint-enable-legacy-pm can solve this.

[banach-space]

Hi @FinleyTang , thanks for preparing this PR 🙏🏻 . As the legacy PM is being deprecated, I think that it would make more sense to simply delete that comment and any references to it. Would you mind updating this PR accordingly?

Thank you,
Andrzej

[FinleyTang]

Hi @FinleyTang , thanks for preparing this PR 🙏🏻 . As the legacy PM is being deprecated, I think that it would make more sense to simply delete that comment and any references to it. Would you mind updating this PR accordingly?

Thank you, Andrzej

Certainly, if you think that retaining the legacy PM usage method is meaningless, we can remove it.

[FinleyTang]

Hi @FinleyTang , thanks for preparing this PR 🙏🏻 . As the legacy PM is being deprecated, I think that it would make more sense to simply delete that comment and any references to it. Would you mind updating this PR accordingly?
Thank you, Andrzej

Certainly, if you think that retaining the legacy PM usage method is meaningless, we can remove it.

I have submitted another commit, deleting the usage method for the legacy PM.

[banach-space]

Hi @FinleyTang , thanks for preparing this PR 🙏🏻 . As the legacy PM is being deprecated, I think that it would make more sense to simply delete that comment and any references to it. Would you mind updating this PR accordingly?
Thank you, Andrzej

Certainly, if you think that retaining the legacy PM usage method is meaningless, we can remove it.

I have submitted another commit, deleting the usage method for the legacy PM.

You can also delete the implementation - it won't be needed moving forward. Thanks!