Remove asm-monitor-backend as ThreatIntel docs codeowner (#28804)

Author: carlostomas-dd

.github/CODEOWNERS

@@ -139,8 +139,8 @@ content/en/logs/error_tracking/browser_and_mobile.md            @Datadog/rum-bro
 content/en/real_user_monitoring/error_tracking/browser.md       @Datadog/rum-browser @DataDog/documentation
 
 # Threat Intel
-content/en/security/threat_intelligence.md  @DataDog/documentation @datamarmot @DataDog/asm-monitor-backend
-content/en/security/application_security/threats/threat_intelligence.md  @DataDog/documentation @datamarmot @DataDog/asm-monitor-backend
+content/en/security/threat_intelligence.md  @DataDog/documentation @datamarmot
+content/en/security/application_security/threats/threat_intelligence.md  @DataDog/documentation @datamarmot
 
 # Observability Pipelines
 static/resources/yaml/observability_pipelines/                  @DataDog/observability-pipelines-worker-admin  @DataDog/documentation