clamav: fixup improper quoting
clamav: fixup improper quoting

Commit 217e06badb146539122732ab0eb27fd17cce09e5 [clamav: fix gcc 6.x
build failure.] fixed a typo in "PACKAGECONFIG" (was missing the 'G')
but unfortunately the PACKAGECONFIG string was incorrectly formed due
to mismatched quotes. This caused a parsing error:

  ERROR: Unable to parse .../meta-security/recipes-security/clamav/clamav_0.99.2.bb
  ...

Removed the unneeded quotes to fix the parsing issue.

Signed-off-by: Mark Asselstine <9d979f2c41783077c213bce515ff7ad668691d2c@windriver.com>
Signed-off-by: Armin Kuster <525edcd226fb27e7f47fbb319a38fe989c677548@gmail.com>

akuster/meta-security,edgeos/meta-security,edgeos/meta-security,akuster/meta-security,akuster/meta-security,edgeos/meta-security,akuster/meta-security,edgeos/meta-security