refactor: make public the code that needs to be exposed, remove unused code

src/schemas/builders.rs

@@ -71,16 +71,16 @@ impl ColumnBuilder {
             return Err("Cannot set AUTO_INCREMENT on non-INTEGER column".to_string());
         }
 
-        Ok(Column::new(
-            self.name,
-            self.datatype,
-            self.nullable,
-            self.default,
-            self.auto_increment,
-            self.unique,
-            self.check_constraint,
-            self.primary_key,
-        ))
+        Ok(Column {
+            name: self.name,
+            datatype: self.datatype,
+            nullable: self.nullable,
+            default: self.default,
+            auto_increment: self.auto_increment,
+            unique: self.unique,
+            check_constraint: self.check_constraint,
+            primary_key: self.primary_key,
+        })
     }
 }
 
@@ -115,7 +115,7 @@ impl TableBuilder {
     }
 
     pub fn build(self) -> Table {
-        Table::new(self.name, self.columns, self.strict)
+        Table { name: self.name, columns: self.columns, strict: self.strict }
     }
 }