tests: check for (*/sec) instead of (*B/sec) to match (X bytes/sec)

I just had: transferred 606 bytes in 2.9 seconds (211 bytes/sec)

tests/test-http-proxy.t

@@ -17,7 +17,7 b' url for proxy, stream'
   $ http_proxy=http://localhost:$HGPORT1/ hg --config http_proxy.always=True clone --uncompressed http://localhost:$HGPORT/ b
   streaming all changes
   3 files to transfer, 303 bytes of data
-  transferred * bytes in * seconds (*B/sec) (glob)
+  transferred * bytes in * seconds (*/sec) (glob)
   updating to branch default
   1 files updated, 0 files merged, 0 files removed, 0 files unresolved
   $ cd b

tests/test-http.t

@@ -27,7 +27,7 b' clone via stream'
   $ hg clone --uncompressed http://localhost:$HGPORT/ copy 2>&1
   streaming all changes
   6 files to transfer, 606 bytes of data
-  transferred * bytes in * seconds (*B/sec) (glob)
+  transferred * bytes in * seconds (*/sec) (glob)
   updating to branch default
   4 files updated, 0 files merged, 0 files removed, 0 files unresolved
   $ hg verify -R copy