16k: shusky: Remove developer option from AOSP pgagnostic targets

Page agnostic (16k targets) are already supposed to boot up with 16k
page size kernels. Hence, the developer option is not required.

Bug: 340969437
Test: Tested `aosp_shiba_pgagnostic` on internal branch to ensure the
      build succeeds and device boots up.
Change-Id: I9fd4011d868f282364c1dedc048531ca2a32c843
2 files changed