poc: fix lib import

Signed-off-by: realanna <anna.reale@dynatrace.com>

operator/go.mod

@@ -15,7 +15,6 @@ require (
 	github.com/onsi/gomega v1.27.6
 	github.com/pkg/errors v0.9.1
 	github.com/prometheus/client_golang v1.15.1
-	github.com/spf13/afero v1.9.5
 	github.com/stretchr/testify v1.8.2
 	go.opentelemetry.io/otel v1.15.1
 	go.opentelemetry.io/otel/exporters/otlp/otlptrace/otlptracegrpc v1.15.1
@@ -68,14 +67,11 @@ require (
 	github.com/pmezard/go-difflib v1.0.0 // indirect
 	github.com/prometheus/client_model v0.4.0 // indirect
 	github.com/prometheus/common v0.42.0 // indirect
+	github.com/prometheus/procfs v0.9.0 // indirect
 	github.com/spf13/afero v1.9.5 // indirect
 	github.com/spf13/pflag v1.0.5 // indirect
 	go.opentelemetry.io/otel/exporters/otlp/internal/retry v1.15.1 // indirect
 	go.opentelemetry.io/otel/exporters/otlp/otlptrace v1.15.1 // indirect
-	github.com/rogpeppe/go-internal v1.10.0 // indirect
-	github.com/spf13/pflag v1.0.5 // indirect
-	go.opentelemetry.io/otel/exporters/otlp/internal/retry v1.14.0 // indirect
-	go.opentelemetry.io/otel/exporters/otlp/otlptrace v1.14.0 // indirect
 	go.opentelemetry.io/proto/otlp v0.19.0 // indirect
 	go.uber.org/atomic v1.10.0 // indirect
 	go.uber.org/multierr v1.8.0 // indirect