remove the clearParam (#6471)

Author: Federico2014

framework/src/main/java/org/tron/core/config/args/Args.java

@@ -388,7 +388,6 @@ public static void setParam(final String[] args, final String confFileName) {
       AnsiConsole.systemUninstall();
       throw new TronError(e, TronError.ErrCode.JDK_VERSION);
     }
-    clearParam(); // reset all parameters to avoid the influence in test
     JCommander.newBuilder().addObject(PARAMETER).build().parse(args);
     if (PARAMETER.version) {
       printVersion();

framework/src/test/java/org/tron/core/config/args/LocalWitnessTest.java

@@ -23,6 +23,7 @@
 import com.google.common.collect.Lists;
 import java.io.IOException;
 import java.security.SecureRandom;
+import org.junit.AfterClass;
 import org.junit.Assert;
 import org.junit.Before;
 import org.junit.Rule;
@@ -52,6 +53,11 @@ public void setLocalWitness() {
                 PRIVATE_KEY));
   }
 
+  @AfterClass
+  public static void clear() {
+    Args.clearParam();
+  }
+
   @Test
   public void whenSetNullPrivateKey() {
     localWitness.setPrivateKeys(null);