Remove ndkports from the platform manifest.

There's no interaction between ndkports and the platform. All this is
doing is causing unnecessary (and long) presubmit times.

Test: treehugger
Bug: None

default.xml

@@ -812,7 +812,6 @@
   <project path="tools/loganalysis" name="platform/tools/loganalysis" groups="nopresubmit,pdk,tradefed" />
   <project path="tools/metalava" name="platform/tools/metalava" groups="pdk,tools" />
   <project path="tools/motodev" name="platform/tools/motodev" groups="notdefault,motodev" />
-  <project path="tools/ndkports" name="platform/tools/ndkports" groups="pdk" />
   <project path="tools/platform-compat" name="tools/platform-compat" groups="pdk-cw-fs,pdk-fs,pdk" />
   <project path="tools/repohooks" name="platform/tools/repohooks" groups="adt-infra,cts,developers,motodev,pdk,tools,tradefed" />
   <project path="tools/security" name="platform/tools/security" groups="pdk,tools" />