Remove @react-native/codegen lint ignores

Summary:
There's no reason for us to have lint ignores for `react-native/codegen/react-native-modules`. This diff removes all such ignores. I'll address any actual problems with the specs in subsequent diffs.

Changelog: [Internal]

Reviewed By: fkgozali

Differential Revision: D24529238

fbshipit-source-id: bbd2f4fb5dace65d803a8f93bd0d9a1c5a1cfb34

Libraries/TurboModule/samples/NativeSampleTurboModule.js

@@ -26,7 +26,6 @@ export interface Spec extends TurboModule {
   +getString: (arg: string) => string;
   +getArray: (arg: Array<any>) => Array<any>;
   +getObject: (arg: Object) => Object;
-  // eslint-disable-next-line @react-native/codegen/react-native-modules
   +getRootTag: (arg: RootTag) => RootTag;
   +getValue: (x: number, y: string, z: Object) => Object;
   +getValueWithCallback: (callback: (value: string) => void) => void;