Revert "chore: add spring pre-releases repos (#7617)" (#7645)

This reverts commit c6aa2b2.

Author: ZheSun88

pom.xml

@@ -257,22 +257,6 @@
             <id>central</id>
             <url>https://repo.maven.apache.org/maven2</url>
         </repository>
-        <repository>
-            <snapshots>
-                <enabled>false</enabled>
-            </snapshots>
-            <id>spring-milestones</id>
-            <name>Spring Milestones</name>
-            <url>https://repo.spring.io/milestone</url>
-        </repository>
-        <repository>
-            <releases>
-                <enabled>false</enabled>
-            </releases>
-            <id>spring-snapshots</id>
-            <name>Spring Snapshots</name>
-            <url>https://repo.spring.io/snapshot</url>
-        </repository>
         <repository>
             <releases>
                 <enabled>true</enabled>
@@ -292,22 +276,6 @@
             <id>central</id>
             <url>https://repo.maven.apache.org/maven2</url>
         </pluginRepository>
-        <pluginRepository>
-            <snapshots>
-                <enabled>false</enabled>
-            </snapshots>
-            <id>spring-milestones</id>
-            <name>Spring Milestones</name>
-            <url>https://repo.spring.io/milestone</url>
-        </pluginRepository>
-        <pluginRepository>
-            <releases>
-                <enabled>false</enabled>
-            </releases>
-            <id>spring-snapshots</id>
-            <name>Spring Snapshots</name>
-            <url>https://repo.spring.io/snapshot</url>
-        </pluginRepository>
         <pluginRepository>
             <releases>
                 <enabled>true</enabled>