Android: Remove useless java autocompleter.

Change-Id: Icf32ea00ba039a517dae78435efc86aae992e05a
Reviewed-by: Tobias Hunger <tobias.hunger@qt.io>

src/plugins/android/android.pro

@@ -42,7 +42,6 @@ HEADERS += \
     androidsignaloperation.h \
     javaeditor.h \
     javaindenter.h \
-    javaautocompleter.h \
     javacompletionassistprovider.h \
     avddialog.h \
     android_global.h \
@@ -84,7 +83,6 @@ SOURCES += \
     androidsignaloperation.cpp \
     javaeditor.cpp \
     javaindenter.cpp \
-    javaautocompleter.cpp \
     javacompletionassistprovider.cpp \
     avddialog.cpp \
     androidbuildapkstep.cpp \