Remove `SDWebImage.xcodeproj` from the workspace, try to solve the Xcode New Build System issue of implicit dependency for `SDWebImage.framework` (Both CocoaPosd and SDWebImage.xcodeproj can produce this framework), which cause build issue

SDWebImage.xcworkspace/contents.xcworkspacedata

@@ -1,9 +1,6 @@
 <?xml version="1.0" encoding="UTF-8"?>
 <Workspace
    version = "1.0">
-   <FileRef
-      location = "group:SDWebImage.xcodeproj">
-   </FileRef>
    <FileRef
       location = "group:Examples/SDWebImage Demo.xcodeproj">
    </FileRef>