This test does not work on arm64e

The expected output would be different. The output for arm64e will
change once this work is finished so it makes no sense to adjust the
test for it now.

Author: aschwaighofer

test/IRGen/relative_protocol_witness_table.swift

@@ -1,6 +1,6 @@
 // RUN: %target-swift-frontend -enable-relative-protocol-witness-tables -module-name A -primary-file %s -emit-ir | %FileCheck %s
 
-// REQUIRES: CPU=x86_64 || CPU=arm64 || CPU=arm64e
+// REQUIRES: CPU=x86_64 || CPU=arm64
 
 protocol FuncOnly {
     func a()