Remove metadata for Data Solr property

Data Solr support was removed in 012a1997 so the property is no longer
supported.

See gh-24939

spring-boot-project/spring-boot-autoconfigure/src/main/resources/META-INF/additional-spring-configuration-metadata.json

@@ -748,16 +748,6 @@
       "name": "spring.data.rest.detection-strategy",
       "defaultValue": "default"
     },
-    {
-      "name": "spring.data.solr.repositories.enabled",
-      "type": "java.lang.Boolean",
-      "description": "Whether to enable Solr repositories.",
-      "defaultValue": true,
-      "deprecation": {
-        "reason": "Spring Data Solr is deprecated.",
-        "level": "warning"
-      }
-    },
     {
       "name": "spring.datasource.initialization-mode",
       "defaultValue": "embedded"