PYTH_CONNECTION / IConfiguration.pythnetRpc / @pythnetwork/pyth-solana-receiver appear unnecessary

[0xcryptovenom]

Follow-up of #399 & related to #396

• PYTH_CONNECTION Solana RPC Connection
• IConfiguration.pythnetRpc configuration key
• @pythnetwork/pyth-solana-receiver

all appear unnecessary, as they're used in src/hooks/useWatchTokenPrices.ts to fetch prices for multiple tokens at 5 / 10 seconds intervals.

However, in src/components/pages/trading/TradingChart/streaming.ts, the Pyth Benchmarks HTTP streaming API is used directly.

There's an opportunity to expand the use of & improve this solution, which would allow to remove the Pyth-specific Solana Connection + config + 3rd party dependency, and consolidate the app's source of truth for token prices at the same time.

[0xcryptovenom]

Alternatively, the Pyth Benchmarks API is kept just for the Trading View - as it appears necessary, but the Pyth Hermes Price Updates Stream API is used in lieu of the other Pyth components for the functionality of useWatchTokenPrices / tokenPrices reducer consumers.