Added logger debug message when file not found when deleting

hosting/forms.py

@@ -108,8 +108,10 @@ class UserHostingKeyForm(forms.ModelForm):
                 raise forms.ValidationError(KEY_ERROR_MESSAGE)
             try:
                 os.remove(tmp_public_key_file.name)
-            except OSError:
-                pass
+            except FileNotFoundError:
+                logger.debug(
+                    "{} could not be deleted because it doesn't exist".format(
+                        tmp_public_key_file.name))
         return openssh_pubkey_str
 
     def clean_name(self):