diff --git a/src/core/public/_mixins.scss b/src/core/public/_mixins.scss
deleted file mode 100644
index 0c6a8571f9e75..0000000000000
--- a/src/core/public/_mixins.scss
+++ /dev/null
@@ -1,10 +0,0 @@
-@mixin kibanaFullBodyHeight($additionalOffset: 0) {
-  // The `--kbnAppHeadersOffset` CSS variable is automatically updated by
-  // styles/rendering/_base.scss, based on whether the Kibana chrome has a
-  // header banner, app menu, and is visible or hidden
-  height: calc(
-    100vh
-    - var(--kbnAppHeadersOffset, var(--euiFixedHeadersOffset, 0))
-    - #{$additionalOffset}
-  );
-}
diff --git a/src/core/public/index.scss b/src/core/public/index.scss
index db05def14bc0c..18fc47a14397d 100644
--- a/src/core/public/index.scss
+++ b/src/core/public/index.scss
@@ -1,3 +1,2 @@
 @import './css_variables';
-@import './mixins';
 @import './styles/index';