Remove RSA2ELK deprecated modules (#38037)

* feat: remove deprecated sophos utm

* feat: remove deprecated barracuda

* feat: remove deprecated bluecoat

* feat: remove deprecated cisco meraki and nexus

* feat: remove deprecated cylance

* feat: remove deprecated f5

* feat: remove deprecated fortinet clientendpoint, fortimail, fortimanager

* feat: remove deprecated impreva

* feat: remove deprecated infoblox

* feat: remove deprecated juniper junos and netscreen

* feat: remove deprecated microsoft dhcp

* feat: remove deprecated netscout

* feat: remove deprecated proofpoint

* feat: remove deprecated radware

* feat: remove deprecated snort

* feat: remove deprecated sonicwall

* feat: remove deprecated squid

* feat: remove deprecated tomcat

* feat: remove deprecated zscaler

* doc: update CHANGELOG-developer.next.asciidoc

* Relocate changelog entries to CHANGELOG.next.asciidoc

* fix: merge conflict errors

---------

Co-authored-by: Taylor Swanson <taylor.swanson@elastic.co>

CHANGELOG.next.asciidoc

@@ -17,6 +17,30 @@ https://github.com/elastic/beats/compare/v8.8.1\...main[Check the HEAD diff]
 *Filebeat*
 
 - Convert netflow input to API v2 and disable event normalisation {pull}37901[37901]
+- Removed deprecated ZScaler from Beats. Use the https://docs.elastic.co/integrations/zscaler_zia[Zscaler Internet Access] Elastic integration instead. {pull}38037[38037]
+- Removed deprecated Tomcat from Beats. Use the https://docs.elastic.co/integrations/apache_tomcat[Apache Tomcat] Elastic integration instead. {pull}38037[38037]
+- Removed deprecated Squid from Beats. See <<migrate-from-deprecated-module>> for migration options. {pull}38037[38037]
+- Removed deprecated SonicWall from Beats. Use the https://docs.elastic.co/integrations/sonicwall[SonicWall Firewall] Elastic integration instead. {pull}38037[38037]
+- Removed deprecated Sonicwall from Beats. Use the https://docs.elastic.co/integrations/sonicwall[SonicWall Firewall] Elastic integration instead. {pull}38037[38037]
+- Removed deprecated Snort from Beats. Use the https://docs.elastic.co/integrations/snort[Snort] Elastic integration instead. {pull}38037[38037]
+- Removed deprecated Radware from Beats. See <<migrate-from-deprecated-module>> for migration options. {pull}38037[38037]
+- Removed deprecated Proofpoint from Beats. Use the https://docs.elastic.co/integrations/proofpoint_tap[Proofpoint TAP] Elastic integration instead. {pull}38037[38037]
+- Removed deprecated Netscout from Beats. See <<migrate-from-deprecated-module>> for migration options. {pull}38037[38037]
+- Removed deprecated Microsoft DHCP from Beats. Use the https://docs.elastic.co/integrations/microsoft_dhcp[Microsoft DHCP] Elastic integration instead. {pull}38037[38037]
+- Removed deprecated Juniper Junos from Beats. Use the https://docs.elastic.co/integrations/juniper_srx[Juniper SRX] Elastic integration instead. {pull}38037[38037]
+- Removed deprecated Juniper Netscreen from Beats. See <<migrate-from-deprecated-module>> for migration options. {pull}38037[38037]
+- Removed deprecated Infoblox from Beats. Use the https://docs.elastic.co/integrations/infoblox_nios[Infoblox NIOS] Elastic integration instead. {pull}38037[38037]
+- Removed deprecated Impreva from Beats. See <<migrate-from-deprecated-module>> for migration options. {pull}38037[38037]
+- Removed deprecated Fortinet Client Endpoint from Beats. Use the https://docs.elastic.co/integrations/fortinet_forticlient[Fortinet FortiClient Logs] Elastic integration instead. {pull}38037[38037]
+- Removed deprecated Fortinet Fortimail from Beats. Use the https://docs.elastic.co/integrations/fortinet_fortimail[Fortinet FortiMail] Elastic integration instead. {pull}38037[38037]
+- Removed deprecated Fortinet Fortimanager from Beats. Use the https://docs.elastic.co/integrations/fortinet_fortimanager[Fortinet FortiManager Logs] Elastic integration instead. {pull}38037[38037]
+- Removed deprecated F5 from Beats. Use the https://docs.elastic.co/integrations/f5_bigip[F5 BIG-IP] Elastic integration instead. {pull}38037[38037]
+- Removed deprecated Cylance from Beats. See <<migrate-from-deprecated-module>> for migration options. {pull}38037[38037]
+- Removed deprecated Cisco Meraki from Beats. Use the https://docs.elastic.co/integrations/cisco_meraki[Cisco Meraki] Elastic integration instead. {pull}38037[38037]
+- Removed deprecated Cisco Nexus from Beats. Use the https://docs.elastic.co/integrations/cisco_nexus[Cisco Nexus] Elastic integration instead. {pull}38037[38037]
+- Removed deprecated Bluecoat from Beats. See <<migrate-from-deprecated-module>> for migration options. {pull}38037[38037]
+- Removed deprecated Barracuda from Beats. Use the https://docs.elastic.co/integrations/barracuda[Barracuda Web Application Firewall] Elastic integration instead. {pull}38037[38037]
+- Removed deprecated Sophos UTM from Beats. Use the https://docs.elastic.co/integrations/sophos[Sophos] Elastic integration instead. {pull}38037[38037]
 - Introduce input/netmetrics and refactor netflow input metrics {pull}38055[38055]