Remove unused imports to prevent TS errors

[ravwojdyla]

This PR removes unused imports which cause TA errors, like this:

node_modules/@duckdb/react-duckdb/src/connection_provider.tsx:5:1 - error TS6133: 'ResolvableStatus' is declared but its value is never read.

5 import { ResolvableStatus } from './resolvable';
  ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~

node_modules/@duckdb/react-duckdb/src/database_provider.tsx:3:27 - error TS6133: 'useDuckDBBundle' is declared but its value is never read.

3 import { useDuckDBLogger, useDuckDBBundle, useDuckDBBundleResolver } from './platform_provider';
                            ~~~~~~~~~~~~~~~

node_modules/@duckdb/react-duckdb/src/database_provider.tsx:4:32 - error TS6133: 'ResolvableStatus' is declared but its value is never read.

4 import { Resolvable, Resolver, ResolvableStatus } from './resolvable';
                                 ~~~~~~~~~~~~~~~~

node_modules/@duckdb/react-duckdb/src/platform_provider.tsx:3:32 - error TS6133: 'ResolvableStatus' is declared but its value is never read.

3 import { Resolvable, Resolver, ResolvableStatus } from './resolvable';
                                 ~~~~~~~~~~~~~~~~


Found 4 errors in 3 files.

Errors  Files
     1  node_modules/@duckdb/react-duckdb/src/connection_provider.tsx:5
     2  node_modules/@duckdb/react-duckdb/src/database_provider.tsx:3
     1  node_modules/@duckdb/react-duckdb/src/platform_provider.tsx:3

This is a problem even with "skipLibCheck": true likely due to microsoft/TypeScript#40426

[carlopi]

Thanks!