Minor JSON fixes

Signed-off-by: Abhishek Malik <abhishek.malik@intel.com>

src/rhusb/rhusb.json

@@ -10,7 +10,6 @@
             "Connections": ["uart"],
             "Project Type": ["industrial", "commercial"],
             "Manufacturers": ["Omega"],
-            "Image": "rhusb.jpg",
             "Examples": {
                 "Python": ["rhusb.py"],
                 "Node.js": ["rhusb.js"],
@@ -58,4 +57,4 @@
             }
         }
     }
-}
+}