Remove obsolete S3 copy from registration and account import

Hop-State: A_06FP9P0BHYQ8QK6E1XVBSQ8
Hop-Proposal: R_06FP9NZ54ADACR6BW31VY4G
Hop-Task: T_06FP9NKX8NWDARTSRJAJ90G
Hop-Attempt: AT_06FP9NKX8N3EMG60VQMW2MR

src/app/login/page.tsx

@@ -577,9 +577,6 @@ export function AuthScreen({ modal = false, onClose, onSuccess }: AuthScreenProp
                                     </div>
                                 </div>
 
-                                <p style={{ fontSize: '12px', color: 'var(--foreground-tertiary)', marginBottom: '16px' }}>
-                                    You can connect your own S3-compatible storage when you first upload media.
-                                </p>
                             </>
                         )}
 
@@ -727,10 +724,6 @@ export function AuthScreen({ modal = false, onClose, onSuccess }: AuthScreenProp
                                     </div>
                                 </div>
 
-                                <p style={{ fontSize: '12px', color: 'var(--foreground-tertiary)', marginBottom: '16px' }}>
-                                    You can connect your own S3-compatible storage when you first upload media.
-                                </p>
-
                         <div style={{ marginBottom: '16px' }}>
                             <label style={{ display: 'block', marginBottom: '6px', fontSize: '14px', fontWeight: 500 }}>
                                 Password (from your old account)