Remove DBus and everything depending on it.

They are no longer needed.
Bug: 31602715
Test: make checkbuild
Change-Id: I9a670568472d1c1809972f126e43a0bddd052aac
Reviewed-on: https://googleplex-android-review.git.corp.google.com/1478002
PDK-Review: Stephen Li <stephenli@google.com>
Tested-by: Sen Jiang <senj@google.com>
Reviewed-by: Alex Deymo <deymo@google.com>
Reviewed-by: Bill Yi <byi@google.com>
Presubmit-Verified: TreeHugger Robot <treehugger-gerrit@google.com>
(cherry picked from commit ee2b454f04)

default.xml

@@ -89,7 +89,6 @@
   <project path="external/apache-xml" name="platform/external/apache-xml" groups="pdk" />
   <project path="external/archive-patcher" name="platform/external/archive-patcher" groups="pdk" />
   <project path="external/autotest" name="platform/external/autotest" groups="pdk-fs" />
-  <project path="external/avahi" name="platform/external/avahi" groups="pdk" />
   <project path="external/avb" name="platform/external/avb" groups="pdk" />
   <project path="external/bison" name="platform/external/bison" groups="pdk" />
   <project path="external/blktrace" name="platform/external/blktrace" groups="pdk" />
@@ -111,8 +110,6 @@
   <project path="external/cros/system_api" name="platform/external/cros/system_api" groups="pdk" />
   <project path="external/curl" name="platform/external/curl" groups="pdk" />
   <project path="external/dagger2" name="platform/external/dagger2" groups="pdk" />
-  <project path="external/dbus" name="platform/external/dbus" groups="pdk" />
-  <project path="external/dbus-binding-generator" name="platform/external/dbus-binding-generator" groups="pdk" />
   <project path="external/deqp" name="platform/external/deqp" groups="pdk-fs" />
   <project path="external/desugar" name="platform/external/desugar" groups="pdk" />
   <project path="external/dexmaker" name="platform/external/dexmaker" groups="pdk" />
@@ -311,7 +308,6 @@
   <project path="external/tinycompress" name="platform/external/tinycompress" groups="pdk" />
   <project path="external/tinyxml" name="platform/external/tinyxml" groups="pdk" />
   <project path="external/tinyxml2" name="platform/external/tinyxml2" groups="pdk" />
-  <project path="external/tlsdate" name="platform/external/tlsdate" groups="pdk" />
   <project path="external/toolchain-utils" name="platform/external/toolchain-utils" />
   <project path="external/toybox" name="platform/external/toybox" groups="pdk" />
   <project path="external/tpm2" name="platform/external/tpm2" groups="pdk" />