On the one hand the bundled upstream README only mentions sentry_test_unit
as a test suite meant for the users to run, on the other comments
in sentry_fuzz_json sources state that it has to be built in a very
special - and performance-killing - way in order to work.

--- a/tests/unit/CMakeLists.txt
+++ b/tests/unit/CMakeLists.txt
@@ -89,6 +89,7 @@
 
 add_test(NAME sentry_test_unit COMMAND sentry_test_unit)
 
+if(0)
 add_executable(sentry_fuzz_json
 	${SENTRY_SOURCES}
 	fuzz.c
@@ -114,3 +115,4 @@
 endif()
 
 add_test(NAME sentry_fuzz_json COMMAND sentry_fuzz_json)
+endif()