取消项目封面图限制

src/main/java/cn/meteor/beyondclouds/modules/project/form/ProjectForm.java

@@ -47,7 +47,6 @@ public class ProjectForm {
     @ApiModelProperty(value = "项目描述")
     @ApiModelProperty(value = "项目描述")
     private String projectDescription;
     private String projectDescription;
 
 
-    @NotEmpty(message = "项目封面图不能为空")
     @ApiModelProperty(value = "封面图")
     @ApiModelProperty(value = "封面图")
     private String cover;
     private String cover;