chore(pprof): import common_telemetry::info

[WenyXu]

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Refer to a related PR or issue link (optional)

#3865

What's changed and what's your intention?

Missing items while executing cargo build --bin greptime --features=pprof

   Compiling cmd v0.7.2 (/home/weny/Projects/greptimedb/src/cmd)
   Compiling servers v0.7.2 (/home/weny/Projects/greptimedb/src/servers)
error: cannot find macro `info` in this scope
  --> src/servers/src/http/pprof.rs:66:9
   |
66 |         info!("start pprof, request: {:?}", req);
   |         ^^^^
   |
help: consider importing one of these items
   |
20 +     use common_telemetry::info;
   |
20 +     use crate::http::info;
   |

Import common_telemetry::info for pprof.rs

Checklist

• I have written the necessary rustdoc comments.
• I have added the necessary unit tests and integration tests.
• This PR does not require documentation updates.

[tisonkun]

Duplicate of #3868.