Minor code cleanup

app/src/main/kotlin/com/tutpro/baresip/Contact.kt

@@ -208,14 +208,14 @@ sealed class Contact {
             BaresipService.contactUpdate.postValue(System.nanoTime())
         }
 
-        fun sortContacts() {
+        private fun sortContacts() {
             BaresipService.contacts.sortBy{ when (it) {
                 is BaresipContact -> it.name
                 is AndroidContact -> it.name
             }}
         }
 
-        fun generateContactNames () {
+        private fun generateContactNames () {
             BaresipService.contactNames.clear()
             BaresipService.contactNames.addAll(
                     BaresipService.contacts.map {

app/src/main/kotlin/com/tutpro/baresip/ContactActivity.kt

@@ -494,16 +494,4 @@ class ContactActivity : AppCompatActivity() {
         }
     }
 
-    companion object {
-
-        var contact: Contact? = null
-
-        fun deleteAndroidContact(ctx: Context, name: String): Int {
-            return ctx.contentResolver.delete(ContactsContract.RawContacts.CONTENT_URI,
-                    ContactsContract.Contacts.DISPLAY_NAME + "='" + name + "'",
-                    null)
-        }
-
-    }
-
 }

app/src/main/kotlin/com/tutpro/baresip/ContactListAdapter.kt

@@ -6,6 +6,7 @@ import android.content.DialogInterface
 import android.content.Intent
 import android.os.Bundle
 import android.os.SystemClock
+import android.provider.ContactsContract
 import android.view.LayoutInflater
 import android.view.View
 import android.view.ViewGroup
@@ -176,7 +177,7 @@ class ContactListAdapter(private val ctx: Context, private val rows: ArrayList<C
                                 this.notifyDataSetChanged()
                             }
                             is Contact.AndroidContact -> {
-                                ContactActivity.deleteAndroidContact(ctx, contact.name)
+                                deleteAndroidContact(ctx, contact.name)
                             }
                         }
                     }
@@ -202,4 +203,11 @@ class ContactListAdapter(private val ctx: Context, private val rows: ArrayList<C
 
         return rowView
     }
+
+    private fun deleteAndroidContact(ctx: Context, name: String): Int {
+        return ctx.contentResolver.delete(ContactsContract.RawContacts.CONTENT_URI,
+                ContactsContract.Contacts.DISPLAY_NAME + "='" + name + "'",
+                null)
+    }
+
 }