Remove message filter entitlement

https://bugs.webkit.org/show_bug.cgi?id=264091
rdar://117852884

Reviewed by Sihui Liu.

The message filter entitlement is not required on iOS.

* Source/WebKit/Scripts/process-entitlements.sh:

Canonical link: https://commits.webkit.org/270171@main

Source/WebKit/Scripts/process-entitlements.sh

@@ -355,7 +355,6 @@ function ios_family_process_webcontent_shared_entitlements()
     plistbuddy Add :com.apple.private.memorystatus bool YES
     plistbuddy Add :com.apple.private.network.socket-delegate bool YES
     plistbuddy Add :com.apple.private.pac.exception bool YES
-    plistbuddy Add :com.apple.private.security.message-filter bool YES
     plistbuddy Add :com.apple.private.webinspector.allow-remote-inspection bool YES
     plistbuddy Add :com.apple.private.webinspector.proxy-application bool YES
     plistbuddy Add :com.apple.private.webkit.use-xpc-endpoint bool YES
@@ -410,7 +409,6 @@ function ios_family_process_gpu_entitlements()
     plistbuddy Add :com.apple.private.memory.ownership_transfer bool YES
     plistbuddy Add :com.apple.private.network.socket-delegate bool YES
     plistbuddy Add :com.apple.private.pac.exception bool YES
-    plistbuddy Add :com.apple.private.security.message-filter bool YES
     plistbuddy Add :com.apple.private.webkit.use-xpc-endpoint bool YES
     plistbuddy Add :com.apple.runningboard.assertions.webkit bool YES
 
@@ -461,7 +459,6 @@ function ios_family_process_network_entitlements()
     plistbuddy Add :com.apple.private.memorystatus bool YES
     plistbuddy Add :com.apple.private.network.socket-delegate bool YES
     plistbuddy Add :com.apple.private.webkit.use-xpc-endpoint bool YES
-    plistbuddy Add :com.apple.private.security.message-filter bool YES
     plistbuddy Add :com.apple.runningboard.assertions.webkit bool YES
 
     plistbuddy Add :com.apple.private.tcc.manager.check-by-audit-token array