Update translation files

Updated by "Remove blank strings" hook in Weblate.

Translation: OpenTracks/opentracks.src-main-res-values-strings-xml--main
Translate-URL: https://hosted.weblate.org/projects/opentracks/opentracks-src-main-res-values-strings-xml-main/

src/main/res/values-sk/strings.xml

@@ -518,7 +518,6 @@ limitations under the License.
     <string name="settings_sensors_summary">Cyklistické snímače, obvod kolies, snímače behu</string>
     <string name="settings_open_tracks_summary">Viac o projekte OpenTracks</string>
     <string name="settings_gps_summary">Interval času, interval vzdialenosti, Max. vzdialenosť, Presnosť</string>
-    <string name="help_support_content"/>
     <string name="share_image_body">Myslím, že by vás mohol zaujímať tento obrázok.</string>
     <string name="export_progress_summary_skip_msg">Vynechané skladby</string>
     <string name="gps_disabled_msg">GPS vypnuté</string>

src/main/res/values-sl/strings.xml

@@ -442,7 +442,6 @@ limitations under the License.
     <string name="settings_gps_summary">Časovni interval, Interval razdalje, Največja razdalja, Točnost</string>
     <string name="settings_sensors_summary">Kolesarski senzorji, Obod kolesa, Tekaški senzorji</string>
     <string name="settings_sensors_title">Bluetooth senzorji</string>
-    <string name="settings_open_tracks_title"></string>
     <string name="settings_recording_show_on_lockscreen_while_recording_title">Prikaži statistiko na zaklenjenem zaslonu</string>
     <string name="about_preference_title">O OpenTracks</string>
     <string name="export_without_photos">brez fotografij</string>

src/main/res/values-tr/strings.xml

@@ -589,7 +589,6 @@ limitations under the License.
         <item quantity="one">1 deniz mili</item>
         <item quantity="other">%1$.1f deniz mili</item>
     </plurals>
-    <string name="image_discard"/>
     <string name="settings_public_api_package_title">Genel API için paket adı</string>
     <string name="show_on_dashboard_not_installed">OpenTracks Gösterge Paneli API\'sini destekleyen hiçbir uygulama yüklü değil.</string>
 </resources>