Fix an issue where validate spammed logs when running. (#4203)

* fix

* update changelog

* Update demisto_sdk/__main__.py

Co-authored-by: Judah Schwartz <JudahSchwartz@users.noreply.github.com>

* Update demisto_sdk/__main__.py

Co-authored-by: Judah Schwartz <JudahSchwartz@users.noreply.github.com>

---------

Co-authored-by: Judah Schwartz <JudahSchwartz@users.noreply.github.com>

.changelog/4203.yml

@@ -0,0 +1,4 @@
+changes:
+- description: Fixed an issue where validate spammed logs when running.
+  type: fix
+pr_number: 4203

demisto_sdk/__main__.py

@@ -839,11 +839,11 @@ def validate(ctx, config, file_paths: str, **kwargs):
                 "config_path",
                 "category_to_run",
             ]:
-                if new_validate_flag in kwargs:
+                if kwargs.get(new_validate_flag):
                     logger.warning(
                         f"The following flag {new_validate_flag.replace('_', '-')} is related only to the new validate and is being called while not running the new validate flow, therefore the flag will be ignored."
                     )
-        if run_old_validate:
+        if not run_old_validate:
             for old_validate_flag in [
                 "no_backward_comp",
                 "no_conf_json",
@@ -865,7 +865,7 @@ def validate(ctx, config, file_paths: str, **kwargs):
                 "run_specific_validations",
                 "no_multiprocessing",
             ]:
-                if old_validate_flag in kwargs:
+                if kwargs.get(old_validate_flag):
                     logger.warning(
                         f"The following flag {old_validate_flag.replace('_', '-')} is related only to the old validate and is being called while not running the old validate flow, therefore the flag will be ignored."
                     )