[SCons] Remove MAXLINELENGTH override for MSVC

It's not clear what is the actual max value that windows support, but
despite their claim of it being 8191 we have been seeing failure with
just 8150.

platform/windows/detect.py

@@ -390,8 +390,6 @@ def configure_msvc(env: "SConsEnvironment", vcvars_msvc_config):
         env.AppendUnique(CPPDEFINES=["R128_STDC_ONLY"])
         env.extra_suffix = ".llvm" + env.extra_suffix
 
-    env["MAXLINELENGTH"] = 8192  # Windows Vista and beyond, so always applicable.
-
     if env["silence_msvc"] and not env.GetOption("clean"):
         from tempfile import mkstemp