Don't append .bin to unnamed files

.bin gets appended to all unnamed files uploaded via a PUT request. This
happens even if a random file name is specified. .bin files are quite
rare so I don't think it's a good extension to slap on to files even if
they happen to be binary in nature.

Instead we should just let the file remain extensionless.

copyparty/httpcli.py

@@ -2100,7 +2100,6 @@ class HttpCli(object):
         suffix = "-{:.6f}-{}".format(time.time(), self.dip())
         nameless = not fn
         if nameless:
-            suffix += ".bin"
             fn = "put" + suffix
 
         params = {"suffix": suffix, "fdir": fdir}