CI/eclair: Remove ARM64 custom clean rules

Rules 5.3, 11.2 and 16.6 are already listed in clean_guidelines_common and
apply to all architectures.  There's no need for arm64 to give them a second
time.

Signed-off-by: Andrew Cooper <andrew.cooper3@citrix.com>
Reviewed-by: Nicola Vetrini <nicola.vetrini@bugseng.com>
Acked-by: Stefano Stabellini <sstabellini@kernel.org>

automation/eclair_analysis/ECLAIR/tagging.ecl

@@ -121,7 +121,7 @@ if(string_equal(target,"x86_64"),
 )
 
 if(string_equal(target,"arm64"),
-    service_selector({"additional_clean_guidelines","MC3A2.R5.3||MC3.R11.2||MC3A2.R16.6"})
+    service_selector({"additional_clean_guidelines","none()"})
 )
 
 -reports+={clean:added,"service(clean_guidelines_common||additional_clean_guidelines)"}