Remove web3 moderation rules from job board

[vcarl]

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[what-the-diff]

PR Summary

• Removed Unnecessary Functions Related to Web3 Content and Posters
  This update eliminates functions and error handling mechanisms that were related to web3 content and posters from several files, contributing to a cleaner, more streamlined code.

• Deleted web3 References from POST_FAILURE_REASONS Enum
  All references to web3, such as web3Content and web3Poster, were removed from the POST_FAILURE_REASONS enum list, ensuring that these outdated terms no longer play a role in post-failure scenarios.

• Streamlined the JobModeration Function
  Modifications were made to the jobModeration function to enhance message handling efficiency. This consisted of eliminating web3-related conditions previously integrated into this function.

• Simplified Validation Logic
  Simplification of the validation logic was achieved by excluding web3 validation checks. Before this change, these checks would block posts containing specific terms. By removing these checks, we've made posting content a more effortless process.

• Updated the ReportReasons Enum
  The ReportReasons list, an enumeration of reasons for reporting issues, was revised to exclude any references to jobCrypto.

• Cleaned up Unused Variables and Functions in jobs-moderation/job-mod-helpers.ts
  To further clean up the code, this update removes unused variables and functions related to web3 content management in the jobs-moderation/job-mod-helpers.ts file. This results in more manageable and less cluttered code.