remove angular/materiam theming

Author: Georgi Peltekov

lib/sandbox/styles.scss

@@ -1,14 +1,14 @@
 /* You can add global styles to this file, and also import other style files */
-@import '~@angular/material/_theming.scss';
+// @import '~@angular/material/_theming.scss';
 
- @include mat-core();
+//  @include mat-core();
 
- $primary: mat-palette($mat-indigo);
- $accent:  mat-palette($mat-pink, A200, A100, A400);
- $warn:    mat-palette($mat-red);
+//  $primary: mat-palette($mat-indigo);
+//  $accent:  mat-palette($mat-pink, A200, A100, A400);
+//  $warn:    mat-palette($mat-red);
 
- $theme: mat-light-theme($primary, $accent, $warn);
+//  $theme: mat-light-theme($primary, $accent, $warn);
 
- @include angular-material-theme($theme);
+//  @include angular-material-theme($theme);