fix: remove archs

Author: faiq

Makefile

@@ -115,7 +115,7 @@ TOOLCHAIN_IMAGE := toolchain
 
 TAG ?= dev
 ARCH ?= $(shell go env GOARCH)
-ALL_ARCH ?= amd64 arm arm64 ppc64le s390x
+ALL_ARCH ?= amd64 arm64
 
 # main controller
 CORE_IMAGE_NAME ?= cluster-api-aws-controller