[#745] Removed empty PluginData boxes

Empty box for some PluginData was displayed if only Player table values
were present (Plugins/Player Data tab)

This was because at some point there was confusion about the integration
not working as intended. If the confusion arises again, I'll figure
something else out, but it'll most likely mean adding values to empty
PluginData rather than displaying empty box.

Plan/common/src/main/java/com/djrapitops/plan/data/element/AnalysisContainer.java

@@ -56,11 +56,6 @@ public final class AnalysisContainer extends InspectContainer {
         playerTableValues.put(columnName, values);
     }
 
-    @Override
-    public boolean isEmpty() {
-        return playerTableValues.isEmpty() && super.isEmpty();
-    }
-
     public boolean hasPlayerTableValues() {
         return !playerTableValues.isEmpty();
     }