TT#129153 Remove handling for Debian releases older than bullseye

This was support to handle the transition period where we were
supporting both buster and bullseye. Which is no longer necessary
starting with mr9.5.

Change-Id: I125f03b5baea172065e1e947f66619cee7eeabe6

templates/400_process-debian.yaml.tt2

@@ -11,16 +11,8 @@ process:
   getty:
     running: [% general.init_system == 'systemd' ? 'false' : 'true' %]
 
-{{if eq .Env.DEBIAN_RELEASE "11"}}
   mariadbd:
     running: true
-{{else}}
-  mysqld:
-    running: true
-
-  mysqld_safe:
-    running: [% general.init_system == 'systemd' ? 'false' : 'true' %]
-{{end}}
 
   redis-server:
     running: true

templates/500_init-daemons-dabian.yaml.tt2

@@ -51,12 +51,6 @@ service:
     enabled: [% general.ngcp_type == 'carrier' && (is_proxy || is_li_dist) ? 'true' : 'false' %]
     running: [% general.ngcp_type == 'carrier' && (is_proxy || is_li_dist) ? 'true' : 'false' %]
 
-{{if lt .Env.DEBIAN_RELEASE "11"}}
-  mysql.service:
-    enabled: true
-    running: true
-{{end}}
-
   ngcp-io-scheduler.service:
     enabled: true
     running: true

templates/610_kernel-sysctl-params.yaml.tt2

@@ -4,11 +4,7 @@ kernel-param:
     value: "1"
 
   kernel.core_pattern:
-{{if eq .Env.DEBIAN_RELEASE "11"}}
     value: "|/lib/systemd/systemd-coredump %P %u %g %s %t 9223372036854775808 %h"
-{{else}}
-    value: "|/lib/systemd/systemd-coredump %P %u %g %s %t 9223372036854775808 %h %e"
-{{end}}
 
   fs.suid_dumpable:
     value: "2"