🐛 remove annotation that conflicts with androidX

Author: salmamali

android/src/main/java/com/instabug/reactlibrary/RNInstabugReactnativeModule.java

@@ -4,7 +4,6 @@
 import android.net.Uri;
 import android.os.Handler;
 import android.os.Looper;
-import android.support.annotation.Nullable;
 import android.util.Log;
 
 import com.facebook.react.bridge.Arguments;
@@ -2158,7 +2157,7 @@ private Locale getLocaleByKey(String instabugLocale) {
 
     private void sendEvent(ReactApplicationContext reactContext,
                            String eventName,
-                           @Nullable WritableMap params) {
+                           WritableMap params) {
         reactContext
                 .getJSModule(DeviceEventManagerModule.RCTDeviceEventEmitter.class)
                 .emit(eventName, params);