[K/N][perf] Fix running benchmarks with custom native build type

kotlin-native/performance/swiftinterop/build.gradle.kts

@@ -11,7 +11,7 @@ plugins {
 
 val toolsPath = "../../tools"
 val targetExtension = "Macos"
-val defaultBuildType = NativeBuildType.RELEASE
+
 project.extra["platformManager"] = PlatformManager(projectDir.parentFile.parentFile.absolutePath, false)
 swiftBenchmark {
     applicationName = "swiftInterop"
@@ -19,6 +19,5 @@ swiftBenchmark {
     nativeSrcDirs = listOf("../shared/src/main/kotlin-native/common", "../shared/src/main/kotlin-native/posix")
     swiftSources = listOf("$projectDir/swiftSrc/benchmarks.swift", "$projectDir/swiftSrc/main.swift")
     compileTasks = listOf("compileKotlinNative", "linkBenchmarkReleaseFrameworkNative")
-    buildType = (findProperty("nativeBuildType") as String?)?.let { NativeBuildType.valueOf(it) } ?: defaultBuildType
     cleanBeforeRunTask = "compileKotlinNative"
 }