Remove obsolete FIXME about windows toolchain

Author: brson

master/master.cfg

@@ -620,9 +620,7 @@ class CommandEnv(object):
         env["RUST_DIST_SERVER"] = dist_server_addy
 
         if "buildername" in props:
-            # FIXME: Want to upgrade to 4.9.1 but cargo build fails
             win32toolchain = r"c:\program files (x86)\mingw-w64\i686-4.9.1-win32-dwarf-rt_v3-rev1\mingw32\bin"
-            #win32toolchain = r"c:\program files (x86)\mingw-w64\i686-4.8.1-win32-dwarf-rt_v3-rev2\mingw32\bin"
             win64toolchain = r"c:\program files\mingw-w64\x86_64-4.9.1-win32-seh-rt_v3-rev1\mingw64\bin"
 
             # This is required to trigger certain workarounds done