config/ios: remove unneeded (-Wl) minimum ios version

We are already setting the minimum version via a (-m) argument and the
-Wl, variant now produces errors from clang.

Part-of: <!1289>

config/ios.config

@@ -133,10 +133,7 @@ else:
 env['CFLAGS'] = env['CPPFLAGS']
 env['LDFLAGS'] = env['CPPFLAGS'] + ' -L{} '.format(lib_dir)
 if ios_platform == 'iPhoneOS':
-  env['LDFLAGS'] += '-Wl,-iphoneos_version_min,{0} '.format(ios_min_version)
   env['CCASFLAGS'] = '-miphoneos-version-min={} '.format(ios_min_version)
-else:
-  env['LDFLAGS'] += '-Wl,-ios_simulator_version_min,{0} '.format(ios_min_version)
 env['CFLAGS'] += extra_cflags
 env['LDFLAGS'] += extra_ldflags
 env['OBJCFLAGS'] = env['CFLAGS'] + extra_objcflags