Fix pylint warning [C0325(superfluous-parens), ] Unnecessary parens after u'if' keyword

************* Module runtime.PLCObject
runtime/PLCObject.py:609: [C0325(superfluous-parens), ] Unnecessary parens after u'if' keyword

          <xsd:attribute name="Command" type="xsd:string" use="optional" default="make -C %(buildpath)s all BEREMIZSRC=%(src)s BEREMIZCFLAGS=%(cflags)s MD5=%(md5)s USE_BEREMIZ=1 FROM_BEREMIZ=1"/>