add paper repo, remove 重复的 placeholder api

Author: 4C01

bedwars-api/pom.xml

@@ -28,6 +28,10 @@
             <id>placeholderapi</id>
             <url>https://repo.extendedclip.com/content/repositories/placeholderapi/</url>
         </repository>
+        <repository>
+            <id>papermc</id>
+            <url>https://repo.papermc.io/repository/maven-public/</url>
+        </repository>
     </repositories>
 
     <dependencies>
@@ -62,12 +66,6 @@
             <version>2.11.6</version>
             <scope>provided</scope>
         </dependency>
-        <dependency>
-            <groupId>me.clip</groupId>
-            <artifactId>placeholderapi</artifactId>
-            <version>2.11.6</version>
-            <scope>compile</scope>
-        </dependency>
     </dependencies>
     <build>
         <plugins>