[receiver/k8sobjects] Do not export (#26306)

**Link to tracking Issue:**
#26304

.chloggen/k8sobjects_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: k8sobjectsreceiver
+
+# 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 `NewTicker`
+
+# 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

@@ -31,7 +31,6 @@ receiver/dockerstatsreceiver
 receiver/fluentforwardreceiver
 receiver/jaegerreceiver
 receiver/journaldreceiver
-receiver/k8sobjectsreceiver
 receiver/kafkareceiver
 receiver/mongodbatlasreceiver
 receiver/mongodbreceiver

receiver/k8sobjectsreceiver/receiver.go

@@ -108,7 +108,7 @@ func (kr *k8sobjectsreceiver) startPull(ctx context.Context, config *K8sObjectsC
 	kr.mu.Lock()
 	kr.stopperChanList = append(kr.stopperChanList, stopperChan)
 	kr.mu.Unlock()
-	ticker := NewTicker(config.Interval)
+	ticker := newTicker(config.Interval)
 	listOption := metav1.ListOptions{
 		FieldSelector: config.FieldSelector,
 		LabelSelector: config.LabelSelector,
@@ -219,7 +219,7 @@ func getResourceVersion(ctx context.Context, config *K8sObjectsConfig, resource
 
 // Start ticking immediately.
 // Ref: https://stackoverflow.com/questions/32705582/how-to-get-time-tick-to-tick-immediately
-func NewTicker(repeat time.Duration) *time.Ticker {
+func newTicker(repeat time.Duration) *time.Ticker {
 	ticker := time.NewTicker(repeat)
 	oc := ticker.C
 	nc := make(chan time.Time, 1)