fix: drop deprecated macosX64 target, keep only macosArm64

macosX64 (Intel) has been removed from Kotlin's native target tiers.
Only macosArm64 (Apple Silicon) is supported.

https://claude.ai/code/session_01WSNE6QKiYM2ZutQD2UihCW

quartz/benchmarks/run_all.sh

@@ -90,10 +90,7 @@ case "$OS_NAME" in
         KN_TARGET="linuxX64Test"
         ;;
     Darwin)
-        case "$ARCH" in
-            arm64) KN_TARGET="macosArm64Test" ;;
-            *)     KN_TARGET="macosX64Test" ;;
-        esac
+        KN_TARGET="macosArm64Test"
         ;;
 esac
 

quartz/build.gradle.kts

@@ -87,7 +87,6 @@ kotlin {
 
     linuxX64()
 
-    macosX64()
     macosArm64()
 
     // This makes sure that the resource file directory is visible for iOS tests.
@@ -310,14 +309,6 @@ kotlin {
                 dependsOn(appleTest)
             }
 
-        val macosX64Main by getting {
-            dependsOn(macosMain)
-        }
-
-        val macosX64Test by getting {
-            dependsOn(macosTest)
-        }
-
         val macosArm64Main by getting {
             dependsOn(macosMain)
         }

quartz/src/nativeTest/kotlin/com/vitorpamplona/quartz/utils/secp256k1/Secp256k1NativeBenchmark.kt

@@ -46,7 +46,6 @@ import kotlin.time.TimeSource
  * Run with:
  *   ./gradlew :quartz:linuxX64Test --tests "*.Secp256k1NativeBenchmark"
  *   ./gradlew :quartz:macosArm64Test --tests "*.Secp256k1NativeBenchmark"
- *   ./gradlew :quartz:macosX64Test --tests "*.Secp256k1NativeBenchmark"
  *
  * IMPORTANT: Requires -opt in the compiler options for meaningful results.
  * Without it, K/N compiles in debug mode (~12x slower). See build.gradle.kts.