Clean up x-pack multi-project YAML test mutes (elastic#129965)

Author: nielsbauman

x-pack/qa/multi-project/xpack-rest-tests-with-multiple-projects/build.gradle

@@ -26,16 +26,15 @@ tasks.named("yamlRestTest").configure {
   usesDefaultDistribution("to be triaged")
   ArrayList<String> blacklist = [
     /* These tests don't work on multi-project yet - we need to go through each of them and make them work */
+    // These analytics tests work in MP mode, they just don't work with security enabled.
     '^analytics/boxplot/*',
     '^analytics/histogram/*',
     '^analytics/moving_percentiles/*',
     '^analytics/top_metrics/*',
     '^analytics/usage/*',
-    '^constant_keyword/10_basic/*',
     '^data_streams/10_data_stream_resolvability/*',
     '^deprecation/10_basic/*',
     '^dlm/10_usage/*',
-    '^esql/46_downsample/*',
     '^esql/60_enrich/*',
     '^esql/60_usage/*',
     '^esql/61_enrich_ip/*',
@@ -123,10 +122,6 @@ tasks.named("yamlRestTest").configure {
     '^monitoring/bulk/10_basic/*',
     '^monitoring/bulk/20_privileges/*',
     '^profiling/10_basic/*',
-    '^redact/10_redact_processor/*',
-    '^role_mapping/10_basic/*',
-    '^role_mapping/20_get_missing/*',
-    '^role_mapping/30_delete/*',
     '^rollup/delete_job/*',
     '^rollup/get_jobs/*',
     '^rollup/get_rollup_caps/*',