message: Remove x-rxjs from tsconfig
diff: "@polkadot/x-fetch": [ "packages/x-fetch/src/browser" ],
  "@polkadot/x-global": [ "packages/x-global/src" ],
  "@polkadot/x-randomvalues": [ "packages/x-randomvalues/src/browser" ],
  - "@polkadot/x-rxjs": ["packages/x-rxjs/src"],
  - "@polkadot/x-rxjs/*": ["packages/x-rxjs/src/*"],
  "@polkadot/x-textdecoder": [ "packages/x-textdecoder/src/browser" ],
  "@polkadot/x-textencoder": [ "packages/x-textencoder/src/browser" ],
  "@polkadot/x-ws": [ "packages/x-ws/src/browser" ]
  