diff --git a/src/env/helper.ts b/src/env/helper.ts
deleted file mode 100644
index 25e934151f..0000000000
--- a/src/env/helper.ts
+++ /dev/null
@@ -1,27 +0,0 @@
-/**
- * Validates a proxy header is valid if supplied
- */
-export const isValidProxyHeaderOrThrow = (val: string) => {
-  if (!val) {
-    return
-  }
-
-  if (!val.startsWith('did:')) {
-    throw new Error(
-      'Configured proxy header is invalid. Does not start with `did:`',
-    )
-  }
-
-  const pts = val.split('#')
-  if (pts.length !== 2) {
-    throw new Error(
-      'Configured proxy header is invalid. Does not contain a single `#`',
-    )
-  }
-
-  if (pts[1].length < 1) {
-    throw new Error(
-      'Configured proxy header is invalid. Does not contain a valid service after the `#`',
-    )
-  }
-}