[FEAT MERGE]logical plan move to plan cache module add feedback into to plan

src/sql/optimizer/ob_opt_default_stat.h

@@ -23,8 +23,6 @@ const double LN_2 = 0.69314718055994530941723212145818;
 
 const double DEFAULT_CACHE_HIT_RATE = 0.8;
 
-const double VIRTUAL_INDEX_GET_COST = 20;
-
 const int64_t DEFAULT_ROW_SIZE = 200;
 
 const int64_t DEFAULT_COLUMN_SIZE = 10;
@@ -69,11 +67,6 @@ const double DEFAULT_SPATIAL_SEL = 0.25;
  */
 const double DEFAULT_SEL = 0.5;
 
-///Update一行数据的代价.暂时写的
-const int64_t UPDATE_ONE_ROW_COST = 1;
-///DELETE一行数据的代价.暂时写的
-const int64_t DELETE_ONE_ROW_COST = 1;
-
 // [agg(expr) <|>|btw cosnt]的默认选择率，参考oracle
 const double DEFAULT_AGG_RANGE = 0.05;
 // [aggr(expr) = const]的默认选择率，参考oracle