feat(p2p): remove sync-v1 code and disable tests

[jansegre]

Motivation

We've had sync-v1 in unsafe mode for a while and bridge nodes are on their way out, also all supported releases have sync-v2 on by default, and as far as we know there's no one using sync-v1 anymore.

Acceptance Criteria

• Remove sync-v1 agent;
• Remove cli flags that enable sync-v1 directly or indirectly;
• Remove enable/disable sync-v1 methods from builder;
• Remove sync-v1 tests;
• Move sync-bridge tests to the normal classes and remove the separate classes;
• No behavior should change apart from not being able to use sync-v1;
• No tests should be removed unless it's specific to sync-v1;

Checklist

• If you are requesting a merge into master, confirm this code is production-ready and can be included in future releases as soon as it gets merged

[github-actions]

Bencher Report

Branch	feat/remove-sync-v1
Testbed	ubuntu-22.04

🚨 1 Alert

Benchmark	Measure Units	View	Benchmark Result (Result Δ%)	Lower Boundary (Limit %)
sync-v2 (up to 20000 blocks)	Latency minutes (m)	📈 plot 🚨 alert (🔔) 🚷 threshold	1.48 (-10.25%)	1.49 (100.28%)

Click to view all benchmark results

Benchmark	Latency	Benchmark Result minutes (m) (Result Δ%)	Lower Boundary minutes (m) (Limit %)	Upper Boundary minutes (m) (Limit %)
sync-v2 (up to 20000 blocks)	📈 view plot 🚨 view alert (🔔) 🚷 view threshold	1.48 (-10.25%)	1.49 (100.28%)	1.82 (81.59%)

🐰 View full continuous benchmarking report in Bencher

[codecov]

Codecov Report

Attention: Patch coverage is 75.00000% with 2 lines in your changes missing coverage. Please review.

Project coverage is 83.63%. Comparing base (90fddc7) to head (aede16a).
Report is 2 commits behind head on master.

Files with missing lines	Patch %	Lines
hathor/builder/cli_builder.py	66.66%	2 Missing ⚠️

Additional details and impacted files

@@            Coverage Diff             @@
##           master    #1197      +/-   ##
==========================================
- Coverage   85.02%   83.63%   -1.40%     
==========================================
  Files         323      320       -3     
  Lines       25133    24540     -593     
  Branches     3859     3762      -97     
==========================================
- Hits        21370    20524     -846     
- Misses       3028     3255     +227     
- Partials      735      761      +26     

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