Reverted api keyword changes to fix CI

Author: Fernthedev

spigot/build.gradle

@@ -24,11 +24,11 @@ repositories {
 dependencies {
     implementation "org.jetbrains.kotlin:kotlin-stdlib-jdk8"
     testCompile group: 'junit', name: 'junit', version: '4.12'
-    implementation group: 'me.clip', name: 'placeholderapi', version: '2.9.2'
+    compileOnly group: 'me.clip', name: 'placeholderapi', version: '2.9.2'
 
     compileOnly 'org.spigotmc:spigot-api:1.14.4-R0.1-SNAPSHOT' // The Spigot API with no shadowing. Requires the OSS repo.
 
-    implementation "com.github.MilkBowl:VaultAPI:1.7"
+    compileOnly "com.github.MilkBowl:VaultAPI:1.7"
 
 //    compileOnly ('com.github.Fernthedev:VaultAPI:7.0') {
 //        exclude group: 'org.bukkit'