chore: remove test link

[rakita]

Submodule was added by mistake

[github-actions]

Valgrind Results:

==4039== Cachegrind, a cache and branch-prediction profiler
==4039== Copyright (C) 2002-2017, and GNU GPL'd, by Nicholas Nethercote et al.
==4039== Using Valgrind-3.18.1 and LibVEX; rerun with -h for copyright info
==4039== Command: target/release/snailtracer
==4039== 
--4039-- warning: L3 cache found, using its data for the LL simulation.
Snailtracer Host+Interpreter benchmark (2.1s) ...            not enough samples
==4039== 
==4039== I   refs:      455,346,370
==4039== I1  misses:          4,531
==4039== LLi misses:          2,888
==4039== I1  miss rate:        0.00%
==4039== LLi miss rate:        0.00%
==4039== 
==4039== D   refs:      237,387,795  (160,564,592 rd   + 76,823,203 wr)
==4039== D1  misses:        349,239  (    208,934 rd   +    140,305 wr)
==4039== LLd misses:        137,561  (      4,048 rd   +    133,513 wr)
==4039== D1  miss rate:         0.1% (        0.1%     +        0.2%  )
==4039== LLd miss rate:         0.1% (        0.0%     +        0.2%  )
==4039== 
==4039== LL refs:           353,770  (    213,465 rd   +    140,305 wr)
==4039== LL misses:         140,449  (      6,936 rd   +    133,513 wr)
==4039== LL miss rate:          0.0% (        0.0%     +        0.2%  )