Update src/test/java/spark/BooksIntegrationTest.java
Update src/test/java/spark/BooksIntegrationTest.java

the book are deleted then used in other tests whence compilation error
borud/spark,stylismo/spark,mugizico/spark,gimlet2/spark,nacx/spark,micsta/spark,despegar/spark,marstianna/spark,gutobortolozzo/spark,nacx/spark,PYangDizzle/Spark,guicamest/spark,jabgibson/spark,PYangDizzle/Spark,opsonsy/spark,ganger85/spark,ganger85/spark,MouettE-SC/spark,zeroflag/spark,nkhuyu/spark-1,mugizico/spark,arekkw/spark,jacek99/spark,greyheart/spark,Tradunsky/spark,Tradunsky/spark,northcapen/spark,jacek99/spark,tempbottle/spark-1,stylismo/spark,rokusr/spark,heuermh/spark-1,ztx1491/spark,gimlet2/spark,zeroflag/spark,Ariel-Isaacm/spark,greyheart/spark,stylismo/spark,sebastian1118/spark,martylamb/spark,micsta/spark,xdcrafts/spark,jabgibson/spark,MouettE-SC/spark,arekkw/spark,gutobortolozzo/spark,opsonsy/spark,stylismo/spark,rokusr/spark,Ariel-Isaacm/spark,heuermh/spark-1,alexlondon07/spark,xdcrafts/spark,seetharamireddy540/spark,hendrosteven/spark,guilhermehbueno/spark,marstianna/spark,guilhermehbueno/spark,gimlet2/spark,despegar/spark,guicamest/spark,seetharamireddy540/spark,tempbottle/spark-1,universsky/spark-1,ztx1491/spark,perwendel/spark,universsky/spark-1,rokusr/spark,sebastian1118/spark,borud/spark,northcapen/spark,MouettE-SC/spark,hendrosteven/spark,gimlet2/spark,martylamb/spark,micsta/spark,perwendel/spark,nkhuyu/spark-1,alexlondon07/spark,perwendel/spark