Remove `GetExporters` from component.Host (#9987)

**Description:** 
Remove the deprecated `GetExporters` function from `component.Host`

**Link to tracking Issue:** <Issue number if applicable>

Related to
https://github.com/open-telemetry/opentelemetry-collector/issues/7370

.chloggen/component-host-remove-getexporters.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: breaking
+
+# The name of the component, or a single word describing the area of concern, (e.g. otlpreceiver)
+component: component
+
+# A brief description of the change.  Surround your text with quotes ("") if it needs to start with a backtick (`).
+note: Removed deprecated function `GetExporters` from `component.Host` interface
+
+# One or more tracking issues or pull requests related to the change
+issues: [9987]
+
+# (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: [api]

component/componenttest/nop_host_test.go

@@ -17,7 +17,6 @@ func TestNewNopHost(t *testing.T) {
 	require.NotNil(t, nh)
 	require.IsType(t, &nopHost{}, nh)
 
-	assert.Nil(t, nh.GetExporters()) // nolint: staticcheck
 	assert.Nil(t, nh.GetExtensions())
 	assert.Nil(t, nh.GetFactory(component.KindReceiver, component.MustNewType("test")))
 }

component/host.go

@@ -27,24 +27,4 @@ type Host interface {
 	// GetExtensions can be called by the component anytime after Component.Start() begins and
 	// until Component.Shutdown() ends.
 	GetExtensions() map[ID]Component
-
-	// GetExporters returns the map of exporters. Only enabled and created exporters will be returned.
-	// Typically is used to find exporters by type or by full config name. Both cases
-	// can be done by iterating the returned map. There are typically very few exporters,
-	// so there are no performance implications due to iteration.
-	// This returns a map by DataType of maps by exporter configs to the exporter instance.
-	// Note that an exporter with the same name may be attached to multiple pipelines and
-	// thus we may have an instance of the exporter for multiple data types.
-	// This is an experimental function that may change or even be removed completely.
-	//
-	// GetExporters can be called by the component anytime after Component.Start() begins and
-	// until Component.Shutdown() ends.
-	//
-	// Deprecated: [0.79.0] This function will be removed in the future.
-	// Several components in the contrib repository use this function so it cannot be removed
-	// before those cases are removed. In most cases, use of this function can be replaced by a
-	// connector. See https://github.com/open-telemetry/opentelemetry-collector/issues/7370 and
-	// https://github.com/open-telemetry/opentelemetry-collector/pull/7390#issuecomment-1483710184
-	// for additional information.
-	GetExporters() map[DataType]map[ID]Component
 }

service/host.go

@@ -14,6 +14,12 @@ import (
 	"go.opentelemetry.io/collector/service/internal/graph"
 )
 
+// TODO: remove as part of https://github.com/open-telemetry/opentelemetry-collector/issues/7370 for service 1.0
+type getExporters interface {
+	GetExporters() map[component.DataType]map[component.ID]component.Component
+}
+
+var _ getExporters = (*serviceHost)(nil)
 var _ component.Host = (*serviceHost)(nil)
 
 type serviceHost struct {