Remove parachain packages dependency

[nakul1010]

Is your feature request related to a problem? Please describe.
Some dependencies from para chain can cause upgrade issues since subtext can have conflicting sub-dependencies. The para chain packages used in the runtime are btc-relay and oracle-rpc-runtime-api.

Describe the solution you'd like
Import the necessary types required through the metadata generated instead of importing it through the para chain packages.

Describe alternatives you've considered
The current alternative is to add para-chain packages which increases compilation time.