GITBOOK-141: No subject

Author: petrasvestartas

gitbook/SUMMARY.md

@@ -48,7 +48,6 @@
 * [Historical Typologies](examples/historical-typologies/README.md)
   * [Barrel Vault](examples/historical-typologies/barrel-vault.md)
   * [\*Cross Vault](examples/historical-typologies/barrel-vault-1.md)
-  * [\*Pillow Vault](examples/historical-typologies/barrel-vault-2.md)
   * [\*Fan Vault](examples/historical-typologies/barrel-vault-3.md)
 
 ## NEXT STEPS