remove unused color definition

Signed-off-by: Andy Scherzinger <info@andy-scherzinger.de>

app/src/main/res/values-night/colors.xml

@@ -38,7 +38,6 @@
     <color name="high_emphasis_text">#deffffff</color>
     <color name="medium_emphasis_text">#99ffffff</color>
     <color name="low_emphasis_text">#61ffffff</color>
-    <color name="high_emphasis_text_inverse">#de000000</color>
 
     <!-- bottom sheet specific icon default color -->
     <color name="high_emphasis_menu_icon">#8Affffff</color>

app/src/main/res/values/colors.xml

@@ -39,7 +39,6 @@
     <color name="high_emphasis_text">#de000000</color>
     <color name="medium_emphasis_text">#99000000</color>
     <color name="low_emphasis_text">#61000000</color>
-    <color name="high_emphasis_text_inverse">#deffffff</color>
 
     <!-- general text colors for dark background -->
     <color name="high_emphasis_text_dark_background">#deffffff</color>