fix(d1): Remove beta mention from warning

[janpio]

D1 is not in beta any more.

[github-actions]

size-limit report 📦

Path	Size
packages/client/runtime/library.js	179.64 KB (0%)
packages/client/runtime/library.d.ts	81 B (0%)
packages/client/runtime/binary.js	600.86 KB (0%)
packages/client/runtime/binary.d.ts	26 B (0%)
packages/client/runtime/edge.js	158.91 KB (0%)
packages/client/runtime/edge-esm.js	158.8 KB (0%)
packages/client/runtime/wasm.js	114.75 KB (0%)
packages/client/runtime/index-browser.js	33.77 KB (0%)
packages/client/runtime/index-browser.d.ts	89 B (0%)
packages/cli/build/index.js	2.77 MB (0%)
packages/client/prisma-client-0.0.0.tgz	3.01 MB (0%)
packages/cli/prisma-0.0.0.tgz	3.97 MB (0%)
packages/bundle-size/da-workers-libsql/output.tgz	882.47 KB (0%)
packages/bundle-size/da-workers-neon/output.tgz	961.67 KB (0%)
packages/bundle-size/da-workers-pg/output.tgz	980.39 KB (0%)
packages/bundle-size/da-workers-pg-worker/output.tgz	936.12 KB (0%)
packages/bundle-size/da-workers-planetscale/output.tgz	898.64 KB (0%)
packages/bundle-size/da-workers-d1/output.tgz	855.53 KB (-0.01% 🔽)