clean code

apps/app/src/styles/_variables.scss

@@ -31,10 +31,4 @@ $grw-sidebar-nav-width: 64px; // !!DO NOT CHANGE!! 'margin-left' for '.css-teprs
 $grw-logo-width: $grw-sidebar-nav-width;
 $grw-logomark-width: 36px;
 
-// fix tab width to 95 pixels
-// see also '_editor.scss'
-$grw-nav-main-left-tab-width: 95px;
-$grw-nav-main-left-tab-width-mobile: 50px;
-$grw-nav-main-tab-height: 42px;
-
 $grw-scroll-margin-top-in-view: 130px;

packages/preset-themes/src/styles/_variables.scss

@@ -30,9 +30,3 @@ $grw-sidebar-nav-width: 64px; // !!DO NOT CHANGE!! 'margin-left' for '.css-teprs
 
 $grw-logo-width: $grw-sidebar-nav-width;
 $grw-logomark-width: 36px;
-
-// fix tab width to 95 pixels
-// see also '_editor.scss'
-$grw-nav-main-left-tab-width: 95px;
-$grw-nav-main-left-tab-width-mobile: 50px;
-$grw-nav-main-tab-height: 42px;