Deprecate QUIL functionality from cirq-core

[vtomole]

Part of #4623

[MichaelBroughton]

LGTM, can you be sure to change the imports to use module imports instead of importting the deprecated_class function directly ?

[vtomole]

@MichaelBroughton Pushed a commit or two. Is this the iteration you'd like?

[CirqBot]

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