No Sajdas are in Salat-e-Janaza

Namaz-e-Janazah is performed by standing in line

4 Takbeers are in Namaz-e-Janaza 

Namaz e Janaza is Farz e Kuffiya

The first Namaz-e-Janazah performed by Holy Prophet ﷺ was pf Asad bin Zaraara Sahabi