[chore] Remove deprecation notice for (pcommon.Map).Range (#12648)

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#### Description

Remove the deprecation notice until the v0.122.0 release is complete.

After trying to migrate from `Range` to `All` in
open-telemetry/opentelemetry-collector-contrib#38676,
I think the changes required for this will be sufficiently large that we
should avoid doing them during a release.

Author: evan-bradley

pdata/pcommon/map.go

@@ -218,8 +218,6 @@ func (m Map) Len() int {
 //	sm.Range(func(k string, v Value) bool {
 //	    ...
 //	})
-//
-// Deprecated: [v0.122.0] use the iterator returned by All instead.
 func (m Map) Range(f func(k string, v Value) bool) {
 	for i := range *m.getOrig() {
 		kv := &(*m.getOrig())[i]