Revert "Polish maven repositories definition"

This commit reverts 62fa602fea

See gh-6031

spring-boot-tools/spring-boot-gradle-plugin/pom.xml

@@ -49,4 +49,16 @@
 			<scope>provided</scope>
 		</dependency>
 	</dependencies>
+	<repositories>
+		<repository>
+			<id>gradle</id>
+			<url>http://repo.gradle.org/gradle/libs-releases-local</url>
+			<releases>
+				<enabled>true</enabled>
+			</releases>
+			<snapshots>
+				<enabled>false</enabled>
+			</snapshots>
+		</repository>
+	</repositories>
 </project>