make binaryen3 test mode just plain -O3 in wasm mode, remove the extra assertions and precise_f32 stuff. it's better to test exactly what the user would do by default, and we have enough coverage of those options in specific tests (#6002)

Author: kripken

tests/test_core.py

@@ -7402,7 +7402,7 @@ def setUp(self):
 binaryen0 = make_run("binaryen0", compiler=CLANG, emcc_args=['-O0', '-s', 'BINARYEN=1', '-s', 'BINARYEN_METHOD="native-wasm"'])
 binaryen1 = make_run("binaryen1", compiler=CLANG, emcc_args=['-O1', '-s', 'BINARYEN=1', '-s', 'BINARYEN_METHOD="native-wasm"'])
 binaryen2 = make_run("binaryen2", compiler=CLANG, emcc_args=['-O2', '-s', 'BINARYEN=1', '-s', 'BINARYEN_METHOD="native-wasm"'])
-binaryen3 = make_run("binaryen3", compiler=CLANG, emcc_args=['-O3', '-s', 'BINARYEN=1', '-s', 'BINARYEN_METHOD="native-wasm"', '-s', 'ASSERTIONS=1', "-s", "PRECISE_F32=1"])
+binaryen3 = make_run("binaryen3", compiler=CLANG, emcc_args=['-O3', '-s', 'BINARYEN=1', '-s', 'BINARYEN_METHOD="native-wasm"'])
 binaryens = make_run("binaryens", compiler=CLANG, emcc_args=['-Os', '-s', 'BINARYEN=1', '-s', 'BINARYEN_METHOD="native-wasm"'])
 binaryenz = make_run("binaryenz", compiler=CLANG, emcc_args=['-Oz', '-s', 'BINARYEN=1', '-s', 'BINARYEN_METHOD="native-wasm"'])