Remove .d.ts generation also from esm variant

src/tsconfig.esm.json

@@ -2,7 +2,6 @@
   "compilerOptions": {
     "module": "esnext",
     "moduleResolution": "node",
-    "declaration": true,
     "outDir": "../release/esm",
     "target": "es5",
     "lib": [