Remove redundant build settings and remove jcenter which is sunsetted.

Author: Anuraag Agrawal

sample-apps/spark-awssdkv1/build.gradle.kts

@@ -5,20 +5,6 @@ plugins {
   id("com.google.cloud.tools.jib")
 }
 
-java {
-  sourceCompatibility = JavaVersion.VERSION_1_8
-  targetCompatibility = JavaVersion.VERSION_1_8
-}
-
-repositories {
-  jcenter()
-  mavenCentral()
-  maven {
-    setUrl("https://oss.jfrog.org/libs-snapshot")
-  }
-  mavenLocal()
-}
-
 dependencies {
   implementation("commons-logging:commons-logging")
   implementation("com.amazonaws:aws-java-sdk-s3")

sample-apps/spark/build.gradle.kts

@@ -5,20 +5,6 @@ plugins {
   id("com.google.cloud.tools.jib")
 }
 
-java {
-  sourceCompatibility = JavaVersion.VERSION_1_8
-  targetCompatibility = JavaVersion.VERSION_1_8
-}
-
-repositories {
-  jcenter()
-  mavenCentral()
-  maven {
-    setUrl("https://oss.jfrog.org/libs-snapshot")
-  }
-  mavenLocal()
-}
-
 dependencies {
   implementation("commons-logging:commons-logging")
   implementation("com.sparkjava:spark-core")

sample-apps/springboot/build.gradle.kts

@@ -4,20 +4,6 @@ plugins {
   id("com.google.cloud.tools.jib")
 }
 
-java {
-  sourceCompatibility = JavaVersion.VERSION_1_8
-  targetCompatibility = JavaVersion.VERSION_1_8
-}
-
-repositories {
-  jcenter()
-  mavenCentral()
-  maven {
-    setUrl("https://oss.jfrog.org/libs-snapshot")
-  }
-  mavenLocal()
-}
-
 dependencies {
   implementation("org.springframework.boot:spring-boot-starter-web")
   implementation("org.springframework.boot:spring-boot-starter")

settings.gradle.kts

@@ -29,7 +29,6 @@ pluginManagement {
 dependencyResolutionManagement {
   repositories {
     mavenCentral()
-    jcenter()
     mavenLocal()
 
     maven {