fix: remove invalid versioning field from release-please config

Author: SeddikBellamine

.release-please-manifest.json

@@ -1,4 +1,3 @@
 {
-  ".": "0.0.3-alpha",
-  "dapp": "0.0.2-alpha"
+  ".": "0.0.3-alpha"
 } 

release-please-config.json

@@ -28,15 +28,6 @@
       "changelog-path": "CHANGELOG.md",
       "include-v-in-tag": true,
 
-      "prerelease": true,
-      "prerelease-type": "beta",
-      "versioning": "prerelease"
-    },
-    "dapp": {
-      "release-type": "node",
-      "changelog-path": "dapp/CHANGELOG.md",
-      "include-v-in-tag": true,
-
       "prerelease": true,
       "prerelease-type": "beta",
       "versioning": "prerelease"