Revert "Issue swagger-api#2117. Fix issue with assigning empty model …

…name when title empty for inline schema"

This reverts commit 698b337.

modules/swagger-parser-v3/src/main/java/io/swagger/v3/parser/util/InlineModelResolver.java

@@ -5,7 +5,6 @@
 import java.util.List;
 import java.util.Map;
 
-import org.apache.commons.lang3.StringUtils;
 import org.slf4j.Logger;
 import org.slf4j.LoggerFactory;
 
@@ -417,7 +416,7 @@ private static String normalize(String pathPart)
     }
 
     private String resolveModelName(String title, String key) {
-        if (StringUtils.isBlank(title)) {
+        if (title == null) {
             return uniqueName(key);
         } else {
             return uniqueName(title);