Remove font size from global styles (#82)

Author: Spikatrix

public/sass/base/_reboot.scss

@@ -64,14 +64,12 @@ html {
 
 // This is specified in runtime Emotion GlobalStyles but we need them for the Grafana loading styles
 html {
-  font-size: $font-size-base;
   height: 100%;
 }
 
 // This is specified in runtime Emotion GlobalStyles but we need them for the Grafana loading styles
 body {
   font-family: $font-family-sans-serif;
-  font-size: $font-size-base;
   line-height: $line-height-base;
   color: $text-color;
   background-color: $body-bg;