[FLINK-28847] Removed Extraneous Semicolon

[rionmonster]

What is the purpose of the change

This pull request removes a unnecessary semicolon present within the FileSinkProgram example application for the File Sink Connector to hopefully not confuse potentially new users when exploring the repository and related connector.

Brief change log

Removed a single line with a single semicolon prior to the remainder of the logic within the FileSinkProgram class.

Verifying this change

This change is a trivial rework / code cleanup without any test coverage.

Does this pull request potentially affect one of the following parts:

• Dependencies (does it add or upgrade a dependency): (no)
• The public API, i.e., is any changed class annotated with @Public(Evolving): (no)
• The serializers: (no)
• The runtime per-record code paths (performance sensitive): (no)
• Anything that affects deployment or recovery: JobManager (and its components), Checkpointing, Kubernetes/Yarn, ZooKeeper: (no)
• The S3 file system connector: (no)

Documentation

• Does this pull request introduce a new feature? (no)
• If yes, how is the feature documented? (not applicable)

[flinkbot]

CI report:

• 360eb73 Azure: FAILURE

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[davidradl]

the Jira does not seem to exist. I suggest this is a trivial hot fix, if a committer wants to merge they can, but it is very low priority

[rionmonster]

FLINK-28847 was the JIRA ticket that I found related to the same area. I do agree that this is fairly trivial and not at all a priority, just figured it was a quick, easy fix.