Remove format version 1 related logic.

Removed from DictionaryStructurePolicyFactory

Bug: 9617181
Change-Id: Ice4b4a24e019c88b0ec129dc69176c7541f8530c

native/jni/src/suggest/policyimpl/dictionary/dictionary_structure_policy_factory.h

@@ -30,8 +30,6 @@ class DictionaryStructurePolicyFactory {
     static const DictionaryStructurePolicy *getDictionaryStructurePolicy(
             const BinaryDictionaryFormatUtils::FORMAT_VERSION dictionaryFormat) {
         switch (dictionaryFormat) {
-            case BinaryDictionaryFormatUtils::VERSION_1:
-                // Fall through
             case BinaryDictionaryFormatUtils::VERSION_2:
                 return PatriciaTriePolicy::getInstance();
             default: