Remove `WITH_REMOVE_METER_PREVIEW`, use `WITH_ABI_VERSION_2` instead

[marcalff]

The feature WITH_REMOVE_METER_PREVIEW was implemented before ABI version 2 was defined.

It makes no sense to keep WITH_REMOVE_METER_PREVIEW now,
rework CMakeLists.txt to expose this feature in WITH_ABI_VERSION_2.

[lalitb]

Agree

[IamVishalSharma]

@marcalff Could you please tell how i can build for: ENABLE_REMOVE_METER_PREVIEW. i was trying below
sudo cmake .. -DBUILD_SHARED_LIBS=ON -DWITH_OTLP_GRPC=ON -DWITH_OTLP_HTTP=ON -DWITH_PROMETHEUS=OFF -DBUILD_TESTING=OFF -DWITH_EXAMPLES_HTTP=ON -DWITH_ABSEIL=ON -DENABLE_REMOVE_METER_PREVIEW=ON

[marcalff]

The option name is WITH_REMOVE_METER_PREVIEW, see:

https://github.com/open-telemetry/opentelemetry-cpp/blob/main/CMakeLists.txt#L233-L239

To use it from CMake, use -DWITH_REMOVE_METER_PREVIEW=ON