shallowutil: dedent code after the previous change

Differential Revision: https://phab.mercurial-scm.org/D11008

hgext/remotefilelog/shallowutil.py

@@ -251,7 +251,6 b' def parsesizeflags(raw):'
         raise BadRemotefilelogHeader(
             "unexpected remotefilelog header: illegal format"
         )
-    if True:
         header = raw[:index]
         if header.startswith(b'v'):
             # v1 and above, header starts with 'v'