fix: Remove encoding for the topic

[nodece]

Fix #827.

Motivation

Topic names are encoded multiple times.

Pulsarctl:

pulsarctl topics create persistent://public/default/topic:12 0

Broker log:

2022-09-12T23:43:46,027+0800 [broker-topic-workers-OrderedExecutor-0-0] INFO  org.apache.pulsar.broker.admin.impl.PersistentTopicsBase - [null] Successfully created non-partitioned topic persistent://public/default/topic%3A12
2022-09-12T23:43:46,028+0800 [broker-topic-workers-OrderedExecutor-0-0] INFO  org.eclipse.jetty.server.RequestLog - 127.0.0.1 - - [12/9月/2022:23:43:45 +0800] "PUT /admi/v2/persistent/public/default/topic%253A12 HTTP/1.1" 204 0 "-" "None" 103

Expected log:

2022-09-12T23:44:36,554+0800 [broker-topic-workers-OrderedExecutor-7-0] INFO  org.apache.pulsar.broker.admin.impl.PersistentTopicsBase - [null] Successfully created non-partitioned topic persistent://public/default/topic:12
2022-09-12T23:44:36,555+0800 [broker-topic-workers-OrderedExecutor-7-0] INFO  org.eclipse.jetty.server.RequestLog - 127.0.0.1 - - [12/9月/2022:23:44:36 +0800] "PUT /admi/v2/persistent/public/default/topic:12 HTTP/1.1" 204 0 "-" "None" 111

Modifications

Remove the GetEncodedTopic() method.

Documentation

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