Remove unnecessary public qualifier from GetConfig.ConfigInfo

Change-Id: I3cd77b9871332ad4f4992f8528286255d2af30ec

src/main/java/com/googlesource/gerrit/plugins/serviceuser/GetConfig.java

diff --git a/src/main/java/com/googlesource/gerrit/plugins/serviceuser/GetConfig.java b/src/main/java/com/googlesource/gerrit/plugins/serviceuser/GetConfig.java
index f31a567..3cca663 100644
--- a/src/main/java/com/googlesource/gerrit/plugins/serviceuser/GetConfig.java
+++ b/src/main/java/com/googlesource/gerrit/plugins/serviceuser/GetConfig.java
@@ -95,7 +95,7 @@
     return v ? v : null;
   }
 
-  public static class ConfigInfo {
+  static class ConfigInfo {
     public String info;
     public String onSuccess;
     public Boolean allowEmail;