Fixed #617 RollbarLogger:log() not compatible with psr/log 1

[danielmorell]

Description of the change

This resolves the psr/log 1 compatibility issue in #617. Removing the type annotations does not break compatibility with psr/log 2 and 3, and seems like the best course of action. In the future if we remove support for psr/log 1 we can reinsert the type annotations.

Type of change

• Bug fix (non-breaking change that fixes an issue)
• New feature (non-breaking change that adds functionality)
• Breaking change (fix or feature that would cause existing functionality to not work as expected)
• Maintenance
• New release

Related issues

• Fix RollbarLogger::log() incompatible with Psr\Log\LoggerInterface::log() v1.0 #617

Checklists

Development

• Lint rules pass locally
• The code changed/added as part of this pull request has been covered with tests
• All tests related to the changed code pass in development

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