Remove unused lint allows

[raskad]

This Pull Request changes the following:

• Remove some unused lint allows
• Move some lint allows to more specific items

[github-actions]

Test262 conformance changes

Test result	main count	PR count	difference
Total	93,990	93,990	0
Passed	74,620	74,620	0
Ignored	17,622	17,622	0
Failed	1,748	1,748	0
Panics	0	0	0
Conformance	79.39%	79.39%	0.00%

[codecov]

Codecov Report

Merging #2968 (f864b8e) into main (8486c28) will decrease coverage by 0.01%.
The diff coverage is n/a.

@@            Coverage Diff             @@
##             main    #2968      +/-   ##
==========================================
- Coverage   50.02%   50.02%   -0.01%     
==========================================
  Files         446      446              
  Lines       45896    45895       -1     
==========================================
- Hits        22960    22959       -1     
  Misses      22936    22936              

Impacted Files	Coverage Δ
boa_engine/src/builtins/map/ordered_map.rs	76.92% <ø> (ø)
boa_engine/src/builtins/string/mod.rs	57.11% <ø> (ø)
boa_engine/src/bytecompiler/mod.rs	66.08% <ø> (ø)
boa_engine/src/object/builtins/jspromise.rs	0.00% <ø> (ø)
boa_engine/src/object/internal_methods/string.rs	36.36% <ø> (ø)
boa_engine/src/realm.rs	73.80% <ø> (ø)
boa_engine/src/string/mod.rs	74.44% <ø> (ø)
boa_parser/src/lexer/cursor.rs	87.03% <ø> (ø)
boa_parser/src/parser/cursor/mod.rs	84.70% <ø> (ø)
boa_parser/src/parser/mod.rs	41.84% <ø> (ø)
... and 5 more

... and 1 file with indirect coverage changes

[Razican]

Thanks!

[HalidOdat]

Looks perfect to me! :)