chore: Remove remaining fishhook code

[brustolin]

Removed the remaining async stitch code.

#skip-changelog

[codecov]

Codecov Report

Merging #3020 (adaa56d) into main (1bf8571) will increase coverage by 0.571%.
The diff coverage is 100.000%.

❗ Current head adaa56d differs from pull request most recent head fda7f79. Consider uploading reports for the commit fda7f79 to get more accurate results

Additional details and impacted files

@@              Coverage Diff              @@
##              main     #3020       +/-   ##
=============================================
+ Coverage   88.270%   88.842%   +0.571%     
=============================================
  Files          495       492        -3     
  Lines        53251     52887      -364     
  Branches     19130     18970      -160     
=============================================
- Hits         47005     46986       -19     
+ Misses        5281      4944      -337     
+ Partials       965       957        -8     

Impacted Files	Coverage Δ
Sources/Sentry/SentryCrashWrapper.m	75.555% <ø> (+13.737%)	⬆️
Sources/Sentry/SentryStacktraceBuilder.m	74.603% <ø> (-0.397%)	⬇️
Sources/Sentry/SentryThreadInspector.m	98.319% <ø> (-0.015%)	⬇️
...rding/Monitors/SentryCrashMonitor_CPPException.cpp	30.630% <ø> (+0.273%)	⬆️
...ording/Monitors/SentryCrashMonitor_MachException.c	35.051% <ø> (+0.120%)	⬆️
...ecording/Monitors/SentryCrashMonitor_NSException.m	32.835% <ø> (+0.482%)	⬆️
...ash/Recording/Monitors/SentryCrashMonitor_Signal.c	55.303% <ø> (+0.415%)	⬆️
Sources/SentryCrash/Recording/SentryCrashReport.c	34.267% <ø> (+0.061%)	⬆️
...yCrash/Recording/Tools/SentryCrashMachineContext.c	69.565% <ø> (-2.040%)	⬇️
...ntryCrash/Recording/Tools/SentryCrashStackCursor.c	71.428% <ø> (+24.620%)	⬆️
... and 4 more

... and 8 files with indirect coverage changes

---

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[github-actions]

Performance metrics 🚀

	Plain	With Sentry	Diff
Startup time	1235.29 ms	1264.26 ms	28.97 ms
Size	20.76 KiB	434.56 KiB	413.79 KiB

Baseline results on branch: main

Startup times

Revision	Plain	With Sentry	Diff
8f397a7	1251.82 ms	1268.34 ms	16.52 ms
dacf894	1232.32 ms	1236.34 ms	4.02 ms
3f1be0f	1208.12 ms	1225.72 ms	17.60 ms
c021422	1237.12 ms	1263.18 ms	26.06 ms
034be1c	1222.67 ms	1236.22 ms	13.55 ms
ad7cec6	1203.22 ms	1224.74 ms	21.52 ms
d3edf46	1213.00 ms	1227.46 ms	14.46 ms
621ba9b	1190.66 ms	1230.84 ms	40.18 ms
7bc3c0d	1261.16 ms	1278.38 ms	17.22 ms
ba4d16f	1236.90 ms	1252.12 ms	15.22 ms

App size

Revision	Plain	With Sentry	Diff
8f397a7	20.76 KiB	420.55 KiB	399.79 KiB
dacf894	20.76 KiB	426.34 KiB	405.58 KiB
3f1be0f	20.76 KiB	414.44 KiB	393.69 KiB
c021422	20.76 KiB	435.64 KiB	414.88 KiB
034be1c	20.76 KiB	436.66 KiB	415.90 KiB
ad7cec6	20.76 KiB	427.32 KiB	406.55 KiB
d3edf46	20.76 KiB	436.65 KiB	415.89 KiB
621ba9b	20.76 KiB	414.45 KiB	393.69 KiB
7bc3c0d	20.76 KiB	427.36 KiB	406.59 KiB
ba4d16f	20.76 KiB	437.12 KiB	416.36 KiB

[philipphofmann]

Best PR ever 🥳

[philipphofmann]

Ups, LGTM