tcl: update package disabling

Update package disabling (removing pkgs subdirectories) after
latest tcl version update:

$ ls tcl8.6.1/pkgs/
 itcl4.0.0
 sqlite3.8.0
 tdbc1.0.0
 tdbcmysql1.0.0
 tdbcodbc1.0.0
 tdbcpostgres1.0.0
 tdbcsqlite3-1.0.0
 thread2.7.0

$ ls tcl8.6.2/pkgs/
 itcl4.0.1
 sqlite3.8.6
 tdbc1.0.1
 tdbcmysql1.0.1
 tdbcodbc1.0.1
 tdbcpostgres1.0.1
 tdbcsqlite3-1.0.1
 thread2.7.1

Fixes:
 http://autobuild.buildroot.net/results/07ae8e42acf62fef99de70c8099ec5a0ca89a817/



Could not reproduce the build failure, but disabling pkgs/sqlite3.8.6 should
prevent all build failures in this directory...

Signed-off-by: Peter Seiderer <ps.report@gmx.net>
Signed-off-by: Peter Korsgaard <peter@korsgaard.com>