[chore] [exporter/signalfx] Remove redundant translation (#27634)

Remove translation dropping the `opencensus.resourcetype` resource
attribute as it's not emitted by k8s receivers anymore. The last one was
removed in
#27616

exporter/signalfxexporter/internal/translation/constants.go

@@ -8,19 +8,6 @@ package translation // import "github.com/open-telemetry/opentelemetry-collector
 // Keep it in YAML format to be able to easily copy and paste it in config if modifications needed.
 const DefaultTranslationRulesYaml = `
 translation_rules:
-# drops opencensus.resourcetype dimension from metrics generated by receivers written
-# using OC data structures. This rule can be removed once the k8s_cluster and kubeletstats
-# receivers have been refactored to use pmetric.Metrics. These dimensions are added as a
-# result of the conversion here https://github.com/open-telemetry/opentelemetry-collector/blob/v0.22.0/translator/internaldata/oc_to_resource.go#L128.
-# Dropping these dimensions will ensure MTSes aren't broken when the receivers are
-# refactored and this resource type dimension will cease to exist. 
-- action: drop_dimensions
-  metric_name: /^(k8s\.|container\.).*/
-  dimension_pairs:
-    opencensus.resourcetype:
-      k8s: true
-      container: true
-
 - action: copy_metrics
   mapping:
     # kubeletstats container cpu needed for calculation below