fix: remove empty strings from translations from other language

app/src/main/res/values-ar-rSA/strings.xml

@@ -110,8 +110,6 @@
     <string name="settings">الإعدادات</string>
     <!-- About screen title -->
     <string name="about">حول التطبيق</string>
-    <!-- Copyright dialog content in about section -->
-    <string name="rights_reserved"></string>
     <!-- Open source licenses in about section -->
     <string name="open_source_licenses">تراخيص مفتوحة المصدر</string>
     <!-- Privacy policy label in about section -->
@@ -142,8 +140,6 @@
     <string name="duration">المدة</string>
     <!-- Crash fallback screen title -->
     <string name="sorry_string">Sorry, that should not have happened.</string>
-    <!-- Crash fallback screen report by email -->
-    <string name="error_report_button_text"></string>
     <!-- Crash fallback screen report by telegram -->
     <string name="error_report_button_telegram">Report this error via telegram</string>
     <!-- Crash fallback screen copy report -->

app/src/main/res/values-it-rIT/strings.xml

@@ -160,8 +160,6 @@
     <string name="what_device_headline">Info:</string>
     <!-- Crash fallback screen info about crash -->
     <string name="what_happened_headline">Cos\'è successo:</string>
-    <!-- Crash fallback screen info about device -->
-    <string name="info_labels"></string>
     <!-- Crash fallback screen ask user input -->
     <string name="your_comment">La tua segnalazione (scrivere in inglese):</string>
     <!-- Crash fallback screen show more details -->

app/src/main/res/values-ru-rRU/strings.xml

@@ -921,8 +921,6 @@
     <string name="newly_installed_apps">Newly installed apps</string>
     <!-- newly installed apps summary in settings preferences -->
     <string name="newly_installed_apps_summary">Apps newly installed (in days)</string>
-    <!-- newly installed apps in settings preferences -->
-    <string name="recently_updated_apps"></string>
     <!-- newly installed apps summary in settings preferences -->
     <string name="recently_updated_apps_summary">Apps recently updated (in days)</string>
     <!-- apps with large size increase in settings preferences -->

app/src/main/res/values-zh-rTW/strings.xml

@@ -35,8 +35,6 @@
     <!-- Shown in welcome screen for first time -->
     <string name="grant_storage_read_permission">為提供最佳效能，App需要授予儲存空間存取權限。</string>
     <!-- Shown in welcome screen for first time -->
-    <string name="grant_notification_permission"></string>
-    <!-- Shown in welcome screen for first time -->
     <string name="grant_permission">授予權限</string>
     <!-- Grant permission button for welcome screen -->
     <string name="grant">授權</string>
@@ -554,8 +552,6 @@
     <string name="model">型號</string>
     <!-- Image viewer camera aperture -->
     <string name="aperture">光圈</string>
-    <!-- Image viewer iso of image -->
-    <string name="iso"></string>
     <!-- Image viewer shutter time -->
     <string name="shutter_time">快門</string>
     <!-- Image viewer image location -->