added Space::remove(size_t table_index) for removing a table item

fixed: pretty printing for Space format

src/space/space.cpp

@@ -2001,6 +2001,17 @@ void Space::remove(const std::wstring & field)
 }
 
 
+void Space::remove(size_t table_index)
+{
+	if( type == type_table && table_index < value.value_table.size() )
+	{
+		delete value.value_table[table_index];
+		value.value_table[table_index] = nullptr;
+		value.value_table.erase(value.value_table.begin() + table_index);
+	}
+}
+
+
 bool Space::is_equal(const wchar_t * field, const char * val) const
 {
 	const Space * space = get_space(field);