Revert "Fix non-matching defaults in docs (#5446) (#5451)"

This reverts commit b26df2a008.

plugins/modules/packaging/language/composer.py

@@ -31,7 +31,6 @@ options:
         type: str
         description:
             - Composer arguments like required package, version and so on.
-        default: ''
     executable:
         type: path
         description:

plugins/modules/packaging/language/maven_artifact.py

@@ -51,7 +51,6 @@ options:
         type: str
         description:
             - The maven classifier coordinate
-        default: ''
     extension:
         type: str
         description:

plugins/modules/packaging/os/opkg.py

@@ -47,7 +47,6 @@ options:
             - "remove"
             - "checksum"
             - "removal-of-dependent-packages"
-        default: ""
         type: str
     update_cache:
         description:

plugins/modules/packaging/os/pacman.py

@@ -73,7 +73,7 @@ options:
     extra_args:
         description:
             - Additional option to pass to pacman when enforcing C(state).
-        default: ''
+        default:
         type: str
 
     update_cache:
@@ -89,7 +89,7 @@ options:
     update_cache_extra_args:
         description:
             - Additional option to pass to pacman when enforcing C(update_cache).
-        default: ''
+        default:
         type: str
 
     upgrade:
@@ -102,7 +102,7 @@ options:
     upgrade_extra_args:
         description:
             - Additional option to pass to pacman when enforcing C(upgrade).
-        default: ''
+        default:
         type: str
 
     reason:

plugins/modules/packaging/os/redhat_subscription.py

@@ -152,6 +152,7 @@ options:
               When some attribute is not listed in the new list of attributes, the existing
               attribute will be removed from C(syspurpose.json) file. Unknown attributes are ignored.
         type: dict
+        default: {}
         suboptions:
             usage:
                 description: Syspurpose attribute usage

plugins/modules/packaging/os/sorcery.py

@@ -76,7 +76,6 @@ options:
             - especially useful for SCM and rsync grimoires
             - makes sense only in pair with C(update_cache)
         type: int
-        default: 0
 '''