feat(#24): Remove user deletion

legalconsenthub-backend/src/main/kotlin/com/betriebsratkanzlei/legalconsenthub/user/UserController.kt

@@ -16,11 +16,6 @@ class UserController(
         return ResponseEntity.ok(userMapper.toUserDto(user))
     }
 
-    override fun deleteUser(id: String): ResponseEntity<Unit> {
-        userService.deleteUser(id)
-        return ResponseEntity.noContent().build()
-    }
-
     override fun updateUserEmailPreferences(
         id: String,
         updateEmailPreferencesDto: UpdateEmailPreferencesDto,

legalconsenthub-backend/src/main/kotlin/com/betriebsratkanzlei/legalconsenthub/user/UserService.kt

@@ -11,7 +11,6 @@ import org.springframework.stereotype.Service
 @Service
 class UserService(
     private val userRepository: UserRepository,
-    private val userMapper: UserMapper,
 ) {
     fun getCurrentUser(): User {
         val principal = SecurityContextHolder.getContext().authentication.principal as CustomJwtTokenPrincipal
@@ -67,10 +66,6 @@ class UserService(
         return userRepository.save(user)
     }
 
-    fun deleteUser(userId: String) {
-        userRepository.deleteById(userId)
-    }
-
     @Transactional
     fun updateEmailPreferences(
         userId: String,