Update git submodules

* Update docs/submodules/oom/offline-installer.git from branch 'master'
  to 26297040c0a6344107a57029db59ce637d9c1980
  - Removing common functions library

    library of common functions is not used anywhere since the download
    process was rewritten to python

    Issue-ID: OOM-1803

    Change-Id: Id648ea738c87e1630963d85184d475f940599f82
    Signed-off-by: Tomáš Levora <t.levora@partner.samsung.com>

diff --git a/docs/submodules/oom/offline-installer.git b/docs/submodules/oom/offline-installer.git
index 651c197..2629704 160000 (submodule)
--- a/docs/submodules/oom/offline-installer.git
+++ b/docs/submodules/oom/offline-installer.git
@@ -1 +1 @@
-Subproject commit 651c1973691d2ab9c2fe12cf7dcdb19b5ef399cd
+Subproject commit 26297040c0a6344107a57029db59ce637d9c1980