Checking if using a high speed camera before throwing error about missing camera trigger file

[alexpiet]

Pull Request instructions:

• Please follow the update protocol
• Answer the questions below in detail. Your responses will be emailed to experimenters.
• If the experimenters must do anything new, provide detailed step by step instructions on the wiki
• If computer maintainers need to manually update anything, provide detailed step by step instructions
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Describe changes:

The FIP rigs are throwing errors about missing camera trigger files because they aren't using the high speed cameras.

What issues or discussions does this update address?

• resolves #489

Describe the expected change in behavior from the perspective of the experimenter

• removes "No camera trigger file" warning in FIP boxes

Describe any manual update steps for task computers

• none

Was this update tested in 446/447?

• [x] tested in 447

[alexpiet]

@hanhou @XX-Yin This is ready for review