Declare OTP26 as the minimum version supported

Author: NelsonVides

rebar.config

@@ -1,4 +1,6 @@
 %% -*- mode: erlang -*-
+{minimum_otp_vsn, "26"}.
+
 {erl_opts, [
     debug_info,
     warn_unused_vars,
@@ -13,9 +15,8 @@
     warn_obsolete_guard,
     strict_validation,
     warn_export_vars,
-    warn_exported_vars,
+    warn_exported_vars
     %warn_missing_spec, warn_untyped_record, <- Added dynamically for OTP >=27 in rebar.config.script
-    {platform_define, "^(2|3)", recent_otp}
 ]}.
 
 {deps, [

src/collectors/vm/prometheus_vm_statistics_collector.erl

@@ -144,7 +144,6 @@ metrics() ->
             "except that real time is measured.", WallclockTime}
     ].
 
--ifdef(recent_otp).
 dirty_stat() ->
     try
         SO = erlang:system_info(schedulers_online),
@@ -156,10 +155,6 @@ dirty_stat() ->
     catch
         _:_ -> [undefined, undefined]
     end.
--else.
-dirty_stat() ->
-    [undefined, undefined].
--endif.
 
 enabled_metrics() ->
     application:get_env(prometheus, vm_statistics_collector_metrics, all).