diff --git a/x-pack/plugins/observability_solution/apm/emotion.d.ts b/x-pack/plugins/observability_solution/apm/emotion.d.ts
deleted file mode 100644
index 213178080e536..0000000000000
--- a/x-pack/plugins/observability_solution/apm/emotion.d.ts
+++ /dev/null
@@ -1,14 +0,0 @@
-/*
- * Copyright Elasticsearch B.V. and/or licensed to Elasticsearch B.V. under one
- * or more contributor license agreements. Licensed under the Elastic License
- * 2.0; you may not use this file except in compliance with the Elastic License
- * 2.0.
- */
-
-import '@emotion/react';
-import type { UseEuiTheme } from '@elastic/eui';
-
-declare module '@emotion/react' {
-  // eslint-disable-next-line @typescript-eslint/no-empty-interface
-  export interface Theme extends UseEuiTheme {}
-}
diff --git a/x-pack/plugins/observability_solution/infra/emotion.d.ts b/x-pack/plugins/observability_solution/infra/emotion.d.ts
deleted file mode 100644
index 213178080e536..0000000000000
--- a/x-pack/plugins/observability_solution/infra/emotion.d.ts
+++ /dev/null
@@ -1,14 +0,0 @@
-/*
- * Copyright Elasticsearch B.V. and/or licensed to Elasticsearch B.V. under one
- * or more contributor license agreements. Licensed under the Elastic License
- * 2.0; you may not use this file except in compliance with the Elastic License
- * 2.0.
- */
-
-import '@emotion/react';
-import type { UseEuiTheme } from '@elastic/eui';
-
-declare module '@emotion/react' {
-  // eslint-disable-next-line @typescript-eslint/no-empty-interface
-  export interface Theme extends UseEuiTheme {}
-}
diff --git a/x-pack/plugins/observability_solution/infra/tsconfig.json b/x-pack/plugins/observability_solution/infra/tsconfig.json
index dd3e56903ea5d..639780d61ae82 100644
--- a/x-pack/plugins/observability_solution/infra/tsconfig.json
+++ b/x-pack/plugins/observability_solution/infra/tsconfig.json
@@ -9,7 +9,6 @@
     "public/**/*",
     "server/**/*",
     "types/**/*",
-    "./emotion.d.ts"
   ],
   "kbn_references": [
     "@kbn/core",