ci: disable native build

.cargo/config.toml

@@ -7,6 +7,3 @@ coverage = "run -p oxc_coverage --release --"
 benchmark = "run -p oxc_benchmark --release --"
 minsize = "run -p oxc_minsize --release --"
 rule = "run -p rulegen"
-
-[build]
-rustflags = ["-C", "target-cpu=native"]