Android example : removed unused AndroidManifest.xml (build uses the one under ofApp/src/main) + commit gradle folder

forgot to commit the gradle folder

(cherry picked from commit f99ef20)

Author: tctr

examples/android/androidEmptyExample/gradle/wrapper/gradle-wrapper.jar

@@ -0,0 +1,6 @@
+#Mon Jun 12 01:17:57 AEST 2023
+distributionBase=GRADLE_USER_HOME
+distributionPath=wrapper/dists
+distributionUrl=https\://services.gradle.org/distributions/gradle-7.5-bin.zip
+zipStoreBase=GRADLE_USER_HOME
+zipStorePath=wrapper/dists