remove patch, since this is already done upstream

ext/patches/signal-cli-native-arch.patch

@@ -1,12 +0,0 @@
-diff --git a/build.gradle.kts b/build.gradle.kts
-index f7a3737b..ffa0a1e7 100644
---- a/build.gradle.kts
-+++ b/build.gradle.kts
-@@ -27,6 +27,7 @@ graalvmNative {
-             buildArgs.add("--install-exit-handlers")
-             buildArgs.add("-Dfile.encoding=UTF-8")
-             buildArgs.add("-J-Dfile.encoding=UTF-8")
-+            buildArgs.add("-march=compatibility")
-             resources.autodetect()
-             configurationFileDirectories.from(file("graalvm-config-dir"))
-             if (System.getenv("GRAALVM_HOME") == null) {