diff --git a/src/back/routes/common/form.ts b/src/back/routes/common/form.ts
deleted file mode 100644
index c961328..0000000
--- a/src/back/routes/common/form.ts
+++ /dev/null
@@ -1,54 +0,0 @@
-import { BaseContext } from "koa";
-import { hasShape, is, predicates } from "@sealcode/ts-predicates";
-import { Collection, Errors } from "sealious";
-import ItemFields from "sealious/@types/src/chip-types/collection-item-body";
-
-export interface CollectionTiedFormData<C extends Collection> {
-	values: Partial<{ [field in keyof ItemFields<C>]: string }>;
-	errors?: Errors.FieldsError<C>;
-}
-
-export interface FormFields<Fields extends string> {
-	values: Partial<{ [field in Fields]: string }>;
-	errors?: Partial<{ [field in Fields]: string }>;
-}
-
-export function formHasAllFields<Fields extends readonly string[]>(
-	ctx: BaseContext,
-	fields: Fields,
-	obj: unknown
-): obj is { [field in Fields[number]]: string } {
-	const valid =
-		is(obj, predicates.object) &&
-		hasShape(
-			Object.fromEntries(fields.map((field) => [field, predicates.string])),
-			obj
-		);
-	if (!valid) {
-		ctx.status = 422;
-		if (is(obj, predicates.object)) {
-			ctx.body = `Missing params: ${fields
-				.filter((field) => !Object.keys(obj).includes(field))
-				.join(", ")}`;
-		}
-	}
-	return valid;
-}
-
-export function formHasSomeFields<Fields extends readonly string[]>(
-	ctx: BaseContext,
-	fields: Fields,
-	obj: unknown
-): obj is Partial<{ [field in Fields[number]]: string }> {
-	const valid =
-		is(obj, predicates.object) &&
-		hasShape(
-			Object.fromEntries(fields.map((field) => [field, predicates.string])),
-			obj
-		);
-	if (!valid) {
-		ctx.status = 422;
-		ctx.body = "Wrong type of params, expected string or undefined";
-	}
-	return valid;
-}