SRE-2330 cleanup references to auth-email (#286)

## 🎟️ Tracking

https://bitwarden.atlassian.net/browse/SRE-2330

## 📔 Objective

Part of overall effort to deprecate auth-email header

Server side changes: bitwarden/server#5709

## ⏰ Reminders before review

- Contributor guidelines followed
- All formatters and local linters executed and passed
- Written new unit and / or integration tests where applicable
- Protected functional changes with optionality (feature flags)
- Used internationalization (i18n) for all UI strings
- CI builds passed
- Communicated to DevOps any deployment requirements
- Updated any necessary documentation (Confluence, contributing docs) or
informed the documentation
  team

## 🦮 Reviewer guidelines

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- 👍 (`:+1:`) or similar for great changes
- 📝 (`:memo:`) or ℹ️ (`:information_source:`) for notes or general info
- ❓ (`:question:`) for questions
- 🤔 (`:thinking:`) or 💭 (`:thought_balloon:`) for more open inquiry
that's not quite a confirmed
  issue and could potentially benefit from discussion
- 🎨 (`:art:`) for suggestions / improvements
- ❌ (`:x:`) or ⚠️ (`:warning:`) for more significant problems or
concerns needing attention
- 🌱 (`:seedling:`) or ♻️ (`:recycle:`) for future improvements or
indications of technical debt
- ⛏ (`:pick:`) for minor or nitpick changes

---------

Co-authored-by: Oscar Hinton <[email protected]>

Author: sneakernuts

crates/bitwarden-core/src/auth/api/request/access_token_request.rs

@@ -31,6 +31,6 @@ impl AccessTokenRequest {
         &self,
         configurations: &ApiConfigurations,
     ) -> Result<IdentityTokenResponse, LoginError> {
-        super::send_identity_connect_request(configurations, None, &self).await
+        super::send_identity_connect_request(configurations, &self).await
     }
 }

crates/bitwarden-core/src/auth/api/request/api_token_request.rs

@@ -39,6 +39,6 @@ impl ApiTokenRequest {
         &self,
         configurations: &ApiConfigurations,
     ) -> Result<IdentityTokenResponse, LoginError> {
-        super::send_identity_connect_request(configurations, None, &self).await
+        super::send_identity_connect_request(configurations, &self).await
     }
 }

crates/bitwarden-core/src/auth/api/request/auth_request_token_request.rs

@@ -55,6 +55,6 @@ impl AuthRequestTokenRequest {
         &self,
         configurations: &ApiConfigurations,
     ) -> Result<IdentityTokenResponse, LoginError> {
-        super::send_identity_connect_request(configurations, Some(&self.email), &self).await
+        super::send_identity_connect_request(configurations, &self).await
     }
 }

crates/bitwarden-core/src/auth/api/request/mod.rs

@@ -12,7 +12,6 @@ mod password_token_request;
 pub(crate) use password_token_request::*;
 
 mod renew_token_request;
-use base64::{engine::general_purpose::URL_SAFE_NO_PAD, Engine};
 pub(crate) use renew_token_request::*;
 
 mod auth_request_token_request;
@@ -30,7 +29,6 @@ use crate::{
 
 async fn send_identity_connect_request(
     configurations: &ApiConfigurations,
-    email: Option<&str>,
     body: impl serde::Serialize,
 ) -> Result<IdentityTokenResponse, LoginError> {
     let mut request = configurations
@@ -51,10 +49,6 @@ async fn send_identity_connect_request(
         request = request.header(reqwest::header::USER_AGENT, user_agent.clone());
     }
 
-    if let Some(email) = email {
-        request = request.header("Auth-Email", URL_SAFE_NO_PAD.encode(email.as_bytes()));
-    }
-
     let response = request
         .body(serde_qs::to_string(&body).expect("Serialize should be infallible"))
         .send()

crates/bitwarden-core/src/auth/api/request/password_token_request.rs

@@ -64,6 +64,6 @@ impl PasswordTokenRequest {
         &self,
         configurations: &ApiConfigurations,
     ) -> Result<IdentityTokenResponse, LoginError> {
-        super::send_identity_connect_request(configurations, Some(&self.email), &self).await
+        super::send_identity_connect_request(configurations, &self).await
     }
 }

crates/bitwarden-core/src/auth/api/request/renew_token_request.rs

@@ -25,6 +25,6 @@ impl RenewTokenRequest {
         &self,
         configurations: &ApiConfigurations,
     ) -> Result<IdentityTokenResponse, LoginError> {
-        super::send_identity_connect_request(configurations, None, &self).await
+        super::send_identity_connect_request(configurations, &self).await
     }
 }

crates/bitwarden-uniffi/kotlin/app/src/main/java/com/bitwarden/myapplication/MainActivity.kt

@@ -234,7 +234,6 @@ class MainActivity : FragmentActivity() {
 
         val loginBody = http.post(IDENTITY_URL + "connect/token") {
             contentType(ContentType.Application.Json)
-            header("Auth-Email", Base64.getEncoder().encodeToString(EMAIL.toByteArray()))
             setBody(FormDataContent(Parameters.build {
                 append("scope", "api offline_access")
                 append("client_id", "web")

crates/bitwarden-uniffi/swift/iOS/App/ContentView.swift

@@ -160,13 +160,9 @@ struct ContentView: View {
         let (loginDataJson, _) = try await http.data(
             for: request(
                 method: "POST", url: IDENTITY_URL + "connect/token",
-                fn: { r in
-                    r.setValue(
-                        EMAIL.data(using: .utf8)?.base64EncodedString(),
-                        forHTTPHeaderField: "Auth-Email")
+                fn: { r in 
                     r.setValue(
                         "application/x-www-form-urlencoded", forHTTPHeaderField: "Content-Type")
-
                     var comp = URLComponents()
                     comp.queryItems = [
                         URLQueryItem(name: "scope", value: "api offline_access"),