remove unused code

src/main/java/com/alibaba/druid/sql/ast/expr/SQLBitStringLiteralExpr.java

@@ -1,94 +0,0 @@
-/*
- * Copyright 1999-2011 Alibaba Group Holding Ltd.
- *
- * Licensed under the Apache License, Version 2.0 (the "License");
- * you may not use this file except in compliance with the License.
- * You may obtain a copy of the License at
- *
- *      http://www.apache.org/licenses/LICENSE-2.0
- *
- * Unless required by applicable law or agreed to in writing, software
- * distributed under the License is distributed on an "AS IS" BASIS,
- * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
- * See the License for the specific language governing permissions and
- * limitations under the License.
- */
-package com.alibaba.druid.sql.ast.expr;
-
-import java.util.BitSet;
-
-import com.alibaba.druid.sql.ast.SQLExprImpl;
-import com.alibaba.druid.sql.visitor.SQLASTVisitor;
-
-/**
- * SQL-92
- * <p>
- * &ltbit string literal> ::= B &ltquote> [ &ltbit> ... ] &ltquote> [ { &ltseparator> ... &ltquote> [ &ltbit> ... ]
- * &ltquote> }... ]
- * </p>
- * 
- * @author WENSHAO
- */
-public class SQLBitStringLiteralExpr extends SQLExprImpl implements SQLLiteralExpr {
-
-    private static final long serialVersionUID = 1L;
-
-    private BitSet            value;
-
-    public SQLBitStringLiteralExpr(){
-
-    }
-
-    public BitSet getValue() {
-        return value;
-    }
-
-    public void setValue(BitSet value) {
-        this.value = value;
-    }
-
-    @Override
-    protected void accept0(SQLASTVisitor visitor) {
-        visitor.visit(this);
-
-        visitor.endVisit(this);
-    }
-
-    public void output(StringBuffer buf) {
-        buf.append("b'");
-        for (int i = 0; i < value.length(); ++i) {
-            buf.append(value);
-        }
-        buf.append("'");
-    }
-
-    @Override
-    public int hashCode() {
-        final int prime = 31;
-        int result = 1;
-        result = prime * result + ((value == null) ? 0 : value.hashCode());
-        return result;
-    }
-
-    @Override
-    public boolean equals(Object obj) {
-        if (this == obj) {
-            return true;
-        }
-        if (obj == null) {
-            return false;
-        }
-        if (getClass() != obj.getClass()) {
-            return false;
-        }
-        SQLBitStringLiteralExpr other = (SQLBitStringLiteralExpr) obj;
-        if (value == null) {
-            if (other.value != null) {
-                return false;
-            }
-        } else if (!value.equals(other.value)) {
-            return false;
-        }
-        return true;
-    }
-}

src/main/java/com/alibaba/druid/sql/ast/expr/SQLDateLiteralExpr.java

@@ -1,82 +0,0 @@
-/*
- * Copyright 1999-2011 Alibaba Group Holding Ltd.
- *
- * Licensed under the Apache License, Version 2.0 (the "License");
- * you may not use this file except in compliance with the License.
- * You may obtain a copy of the License at
- *
- *      http://www.apache.org/licenses/LICENSE-2.0
- *
- * Unless required by applicable law or agreed to in writing, software
- * distributed under the License is distributed on an "AS IS" BASIS,
- * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
- * See the License for the specific language governing permissions and
- * limitations under the License.
- */
-package com.alibaba.druid.sql.ast.expr;
-
-import com.alibaba.druid.sql.ast.SQLExprImpl;
-import com.alibaba.druid.sql.visitor.SQLASTVisitor;
-
-public class SQLDateLiteralExpr extends SQLExprImpl implements SQLLiteralExpr {
-
-    private static final long   serialVersionUID = 1L;
-
-    private SQLDateLiteralValue value            = new SQLDateLiteralValue();
-
-    public SQLDateLiteralExpr(){
-
-    }
-
-    public SQLDateLiteralValue getValue() {
-        return value;
-    }
-
-    public void setValue(SQLDateLiteralValue value) {
-        this.value = value;
-    }
-
-    public void output(StringBuffer buf) {
-        buf.append("DATE'");
-        this.value.output(buf);
-        buf.append("'");
-    }
-
-    @Override
-    protected void accept0(SQLASTVisitor visitor) {
-        visitor.visit(this);
-
-        visitor.endVisit(this);
-    }
-
-    @Override
-    public int hashCode() {
-        final int prime = 31;
-        int result = 1;
-        result = prime * result + ((value == null) ? 0 : value.hashCode());
-        return result;
-    }
-
-    @Override
-    public boolean equals(Object obj) {
-        if (this == obj) {
-            return true;
-        }
-        if (obj == null) {
-            return false;
-        }
-        if (getClass() != obj.getClass()) {
-            return false;
-        }
-        SQLDateLiteralExpr other = (SQLDateLiteralExpr) obj;
-        if (value == null) {
-            if (other.value != null) {
-                return false;
-            }
-        } else if (!value.equals(other.value)) {
-            return false;
-        }
-        return true;
-    }
-
-}