Revert "security: enforce authenticated CRM contact ownership"

This reverts commit e13700ab65.

lib/auth/resolveCrmLocale.js

@@ -1,42 +0,0 @@
-import { azureHeadersPaged } from "../../actions/core/headers";
-import { escapeODataString } from "../../actions/core/guards";
-import { consoleLogger } from "../../actions/core/logger";
-import { relayGetData } from "../../pages/api/middleware/relayForwarding";
-import { RELAY_POLICY_STRICT_LOGIN } from "../../pages/api/middleware/relayPolicyPresets";
-
-const WELSH_LANGUAGE_CODE = 846040000;
-const EMAIL_PATTERN = /^[^\s@]+@[^\s@]+\.[^\s@]+$/;
-
-export const resolveCrmLocale = async (email) => {
-    if (typeof email !== "string") return null;
-
-    const normalizedEmail = email.trim().toLowerCase();
-
-    if (!EMAIL_PATTERN.test(normalizedEmail)) return null;
-
-    const queryUrl =
-        "contacts?$filter=emailaddress1 eq '" +
-        escapeODataString(normalizedEmail) +
-        "' and statuscode eq 1&$count=true&$select=pinswg_preferredlanguage";
-
-    try {
-        const { data } = await relayGetData({
-            queryUrl,
-            requestOptionsBuilder: (accessToken) =>
-                azureHeadersPaged(accessToken),
-            relayPolicy: RELAY_POLICY_STRICT_LOGIN
-        });
-        const preferredLanguage = data?.value?.[0]?.pinswg_preferredlanguage;
-
-        if (preferredLanguage === WELSH_LANGUAGE_CODE) return "cy";
-        if (preferredLanguage != null) return "en";
-
-        return null;
-    } catch (error) {
-        consoleLogger({
-            name: "ResolveCrmLocale",
-            message: "CRM locale lookup failed"
-        });
-        return null;
-    }
-};