Revert "検索モード実装"

This reverts commit e8f51d3717.

model/src/main/java/one/nem/lacerta/model/search/SearchMode.java

@@ -1,14 +0,0 @@
-package one.nem.lacerta.model.search;
-
-public enum SearchMode {
-    AUTO("auto"),
-    EXACT("exact"),
-    LIKE("like"),
-    FULLTEXT("fulltext");
-
-    private final String value;
-
-    private SearchMode(String value) {
-        this.value = value;
-    }
-}