chore(turnier-feature): remove unused ViewModels and UI components

- Removed `AbteilungViewModel`, `BewerbAnlegenViewModel`, `BewerbViewModel`, and `CreateBewerbWizardScreen`.
- Cleaned up related imports and unused domain models.

frontend/features/veranstalter-feature/build.gradle.kts

@@ -11,13 +11,17 @@ group = "at.mocode.clients"
 version = "1.0.0"
 kotlin {
   jvm()
+  @OptIn(org.jetbrains.kotlin.gradle.ExperimentalWasmDsl::class)
+  wasmJs {
+    browser()
+  }
+
   sourceSets {
-    jvmMain.dependencies {
+    commonMain.dependencies {
       implementation(projects.frontend.core.designSystem)
       implementation(projects.frontend.core.domain)
       implementation(projects.frontend.core.network)
       implementation(projects.frontend.core.navigation)
-      implementation(compose.desktop.currentOs)
       implementation(compose.foundation)
       implementation(compose.runtime)
       implementation(compose.material3)
@@ -27,8 +31,11 @@ kotlin {
       implementation(libs.koin.core)
       implementation(libs.koin.compose)
       implementation(libs.koin.compose.viewmodel)
-      // Ktor client for repository implementation
       implementation(libs.ktor.client.core)
     }
+
+    jvmMain.dependencies {
+      implementation(compose.desktop.currentOs)
+    }
   }
 }

frontend/features/veranstalter-feature/src/commonMain/kotlin/at/mocode/frontend/features/veranstalter/data/remote/FakeVeranstalterRepository.kt

@@ -38,7 +38,7 @@ class FakeVeranstalterRepository : VeranstalterRepository {
   }
 
   override suspend fun delete(id: Long): Result<Unit> {
-    mockData.removeIf { it.id == id }
+    mockData.removeAll { it.id == id }
     return Result.success(Unit)
   }
 }