Clear unneeded bootsrap themes files. Change Readme

assets/bs/spacelab/_bootswatch.scss

@@ -1,107 +0,0 @@
-// Spacelab 5.3.8
-// Bootswatch
-
-
-// Variables
-
-$web-font-path: "https://fonts.googleapis.com/css2?family=Open+Sans:ital,wght@0,400;0,700;1,400;1,700&display=swap" !default;
-@if $web-font-path {
-  @import url("#{$web-font-path}");
-}
-
-// Mixins
-
-@mixin btn-shadow($color) {
-  @include gradient-y-three-colors(tint-color($color, 24%), $color, 50%, shade-color($color, 8%));
-  filter: none;
-  border: 1px solid shade-color($color, 20%);
-}
-
-// Navbar
-
-.navbar {
-  .nav-link,
-  .navbar-brand {
-    text-shadow: -1px -1px 0 rgba(0, 0, 0, .05);
-    transition: color ease-in-out .2s;
-  }
-
-  @each $color, $value in $theme-colors {
-    &.bg-#{$color} {
-      @include btn-shadow($value);
-    }
-  }
-
-  &.bg-light {
-    .nav-link,
-    .navbar-brand {
-      text-shadow: 1px 1px 0 rgba(255, 255, 255, .1);
-    }
-
-    .navbar-brand {
-      color: $navbar-light-color;
-
-      &:hover {
-        color: $info;
-      }
-    }
-  }
-}
-
-// Buttons
-
-.btn {
-  text-shadow: -1px -1px 0 rgba(0, 0, 0, .1);
-
-  &-link {
-    text-shadow: none;
-  }
-}
-
-@each $color, $value in $theme-colors {
-  .btn-#{$color} {
-    @include btn-shadow($value);
-  }
-
-  .btn-#{$color}:not(.disabled):hover {
-    @include btn-shadow(shade-color($value, 8%));
-  }
-}
-
-[class*="btn-outline-"] {
-  text-shadow: none;
-}
-
-// Indicators
-
-.badge {
-  &.bg-light {
-    color: $dark;
-  }
-}
-
-// Containers
-
-.card,
-.list-group-item {
-  h1,
-  h2,
-  h3,
-  h4,
-  h5,
-  h6 {
-    color: inherit;
-  }
-}
-
-// Tables
-
-.table-primary,
-.table-secondary,
-.table-success,
-.table-warning,
-.table-danger,
-.table-info,
-.table-light {
-  --#{$prefix}table-color: #{$body-color};
-}

assets/bs/spacelab/_variables.scss

@@ -1,65 +0,0 @@
-// Spacelab 5.3.8
-// Bootswatch
-
-$theme: "spacelab" !default;
-
-//
-// Color system
-//
-
-$white:    #fff !default;
-$gray-100: #f8f9fa !default;
-$gray-200: #eee !default;
-$gray-300: #dee2e6 !default;
-$gray-400: #ced4da !default;
-$gray-500: #999 !default;
-$gray-600: #777 !default;
-$gray-700: #495057 !default;
-$gray-800: #333 !default;
-$gray-900: #2d2d2d !default;
-$black:    #000 !default;
-
-$blue:    #446e9b !default;
-$indigo:  #6610f2 !default;
-$purple:  #6f42c1 !default;
-$pink:    #e83e8c !default;
-$red:     #cd0200 !default;
-$orange:  #fd7e14 !default;
-$yellow:  #d47500 !default;
-$green:   #3cb521 !default;
-$teal:    #20c997 !default;
-$cyan:    #3399f3 !default;
-
-$primary:       $blue !default;
-$secondary:     $gray-500 !default;
-$success:       $green !default;
-$info:          $cyan !default;
-$warning:       $yellow !default;
-$danger:        $red !default;
-$light:         $gray-200 !default;
-$dark:          $gray-800 !default;
-
-$min-contrast-ratio:   2.65 !default;
-
-// Body
-
-$body-color:                $gray-600 !default;
-
-// Links
-
-$link-color:                $info !default;
-
-// Fonts
-
-// stylelint-disable-next-line value-keyword-case
-$font-family-sans-serif:      "Open Sans", -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Helvetica Neue", Arial, sans-serif, "Apple Color Emoji", "Segoe UI Emoji", "Segoe UI Symbol" !default;
-$headings-color:              $gray-900 !default;
-
-// Tables
-
-$table-color:                 initial !default;
-
-// Navbar
-
-$navbar-light-hover-color:          $info !default;
-$navbar-light-active-color:         $info !default;