chore: remove visibility attribute from euicc memory reset preference (#166)

Reviewed-on: https://gitea.angry.im/PeterCxy/OpenEUICC/pulls/166
Co-authored-by: septs <github@septs.pw>
Co-committed-by: septs <github@septs.pw>

app-common/src/main/res/xml/pref_settings.xml

@@ -71,7 +71,6 @@
 
         <CheckBoxPreference
             app:iconSpaceReserved="false"
-            app:isPreferenceVisible="false"
             app:key="pref_developer_euicc_memory_reset"
             app:summary="@string/pref_developer_euicc_memory_reset_desc"
             app:title="@string/pref_developer_euicc_memory_reset" />