Update values-et/strings.xml

String with key "delete" was removed in the meantime. So removing it here too.

app/src/main/res/values-et/strings.xml

@@ -12,7 +12,6 @@
     <string name="name">Nimi</string>
     <string name="description_hint">Kirjeldus</string>
     <string name="ok">Sobib</string>
-    <string name="delete">Kustuta</string>
     <string name="app_name">Tegemiste loend</string>
     <string name="app_name_long">Privaatsussõbralik tegemiste loend</string>
     <string name="yes">Jah</string>
@@ -22,4 +21,4 @@
     <string name="settings">Seadistused</string>
     <string name="help">Abiteave</string>
     <string name="navigation_drawer_open">Ava menüü</string>
-</resources>
+</resources>