[exporter/jaeger] do not expose method (#26466)

**Description:**
Remove exposed function, only keep NewFactory to pass checkapi

**Link to tracking Issue:**

#26304

.chloggen/jaeger-checkapi.yaml

@@ -0,0 +1,27 @@
+# Use this changelog template to create an entry for release notes.
+
+# One of 'breaking', 'deprecation', 'new_component', 'enhancement', 'bug_fix'
+change_type: breaking
+
+# The name of the component, or a single word describing the area of concern, (e.g. filelogreceiver)
+component: jaegerexporter
+
+# A brief description of the change.  Surround your text with quotes ("") if it needs to start with a backtick (`).
+note: Do not export the function `MetricViews`
+
+# Mandatory: One or more tracking issues related to the change. You can use the PR number here if no issue exists.
+issues: [26304]
+
+# (Optional) One or more lines of additional information to render under the primary note.
+# These lines will be padded with 2 spaces and then inserted directly into the document.
+# Use pipe (|) for multiline entries.
+subtext:
+
+# If your change doesn't affect end users or the exported elements of any package,
+# you should instead start your pull request title with [chore] or use the "Skip Changelog" label.
+# Optional: The change log or logs in which this entry should be included.
+# e.g. '[user]' or '[user, api]'
+# Include 'user' if the change is relevant to end users.
+# Include 'api' if there is a change to a library API.
+# Default: '[user]'
+change_logs: [api]

cmd/checkapi/allowlist.txt

@@ -6,7 +6,6 @@ exporter/coralogixexporter
 exporter/dynatraceexporter
 exporter/elasticsearchexporter
 exporter/f5cloudexporter
-exporter/jaegerexporter
 exporter/kafkaexporter
 exporter/loadbalancingexporter
 exporter/logzioexporter

exporter/jaegerexporter/metrics.go

@@ -22,7 +22,7 @@ var (
 	}
 )
 
-// MetricViews return the metrics views according to given telemetry level.
-func MetricViews() []*view.View {
+// metricViews return the metrics views according to given telemetry level.
+func metricViews() []*view.View {
 	return []*view.View{vLastConnectionState}
 }

exporter/jaegerexporter/metrics_test.go

@@ -14,7 +14,7 @@ func TestProcessorMetrics(t *testing.T) {
 		"jaegerexporter_conn_state",
 	}
 
-	views := MetricViews()
+	views := metricViews()
 	for i, viewName := range expectedViewNames {
 		assert.Equal(t, viewName, views[i].Name)
 	}