fix smoke from builds produced by --all-features

Signed-off-by: Jason Volk <jason@zemos.net>

src/core/Cargo.toml

@@ -63,10 +63,6 @@ brotli_compression = [
 ]
 perf_measurements = []
 sentry_telemetry = []
-mods = [
-	"dep:libloading"
-]
-panic_trap = []
 
 [dependencies]
 async-trait.workspace = true
@@ -86,7 +82,6 @@ infer.workspace = true
 ipaddress.workspace = true
 itertools.workspace = true
 libloading.workspace = true
-libloading.optional = true
 log.workspace = true
 lru-cache.workspace = true
 parking_lot.optional = true