Removed default warning text in FMC warning section

Author: hAr1x

source/html/static/modal.html

@@ -8,7 +8,7 @@
     <div class="fmc-modal__title">
         <h4><strong>Flight Management Computer</strong></h4>
     </div>
-    <div class="fmc-modal__warning">WARNING! Invalid Waypoint Input</div>
+    <div class="fmc-modal__warning"></div>
 
     <!-- FMC Modal layout -->
     <div class="fmc-modal__layout-container">