[Update] added a note about deprecation of seldon and tensorflow protocol

[Rajakavitha1]

What this PR does / why we need it:

Which issue(s) this PR fixes:

Fixes #

Special notes for your reviewer:

I have note deleted any existing content that explains about Seldon or TensorFlow protocol. Only added a note in the related sections about transitioning to OIP.

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❌ Rakavitha Kodhandapani

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[matthewlowdon]

As discussed, remove references to Seldon Protocol and Tensorflow Protocol no longer being supported in Core 1.

[Rajakavitha1]

As discussed, remove references to Seldon Protocol and Tensorflow Protocol no longer being supported in Core 1.

Hi @matthewlowdon. I rephrased the note. Please take a look.