[processorhelper] deprecating unused methods (open-telemetry#11083)

`[Logs|Traces|Metrics]Inserted` was not used in the core/contrib repos,
marking them as deprecated.

---------

Signed-off-by: Alex Boten <[email protected]>

.chloggen/codeboten_deprecate-unused-methods.yaml

@@ -0,0 +1,25 @@
+# Use this changelog template to create an entry for release notes.
+
+# One of 'breaking', 'deprecation', 'new_component', 'enhancement', 'bug_fix'
+change_type: deprecation
+
+# The name of the component, or a single word describing the area of concern, (e.g. otlpreceiver)
+component: processorhelper
+
+# A brief description of the change.  Surround your text with quotes ("") if it needs to start with a backtick (`).
+note: These funcs are not used anywhere, marking them deprecated.
+
+# One or more tracking issues or pull requests related to the change
+issues: [11083]
+
+# (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:
+
+# 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: []

processor/processorhelper/obsreport.go

@@ -120,6 +120,8 @@ func (or *ObsReport) TracesDropped(ctx context.Context, numSpans int) {
 }
 
 // TracesInserted reports that the trace data was inserted.
+//
+// Deprecated: [v0.109.0] This method was not used in core/contrib and it's unclear when it should have been used.
 func (or *ObsReport) TracesInserted(ctx context.Context, numSpans int) {
 	or.recordData(ctx, component.DataTypeTraces, int64(0), int64(0), int64(0), int64(numSpans))
 }
@@ -140,6 +142,8 @@ func (or *ObsReport) MetricsDropped(ctx context.Context, numPoints int) {
 }
 
 // MetricsInserted reports that the metrics were inserted.
+//
+// Deprecated: [v0.109.0] This method was not used in core/contrib and it's unclear when it should have been used.
 func (or *ObsReport) MetricsInserted(ctx context.Context, numPoints int) {
 	or.recordData(ctx, component.DataTypeMetrics, int64(0), int64(0), int64(0), int64(numPoints))
 }
@@ -160,6 +164,8 @@ func (or *ObsReport) LogsDropped(ctx context.Context, numRecords int) {
 }
 
 // LogsInserted reports that the logs were inserted.
+//
+// Deprecated: [v0.109.0] This method was not used in core/contrib and it's unclear when it should have been used.
 func (or *ObsReport) LogsInserted(ctx context.Context, numRecords int) {
 	or.recordData(ctx, component.DataTypeLogs, int64(0), int64(0), int64(0), int64(numRecords))
 }