Fix lint warnings in import lines under cts/tests/inputmethod

Bug: 121097452
Test: prebuilts/checkstyle/checkstyle.py -f cts/tests/inputmethod/ \
          | grep order-import-statementsERRORS
Test: atest CtsInputMethodTestCases
Change-Id: I20a48dfe13c8ac5f9a16dd9613af0ebffe565a35
19 files changed