removing @api tag from all acceptance feature files (#7027)

tests/acceptance/features/coreApiShareManagementToShares/acceptShares.feature

@@ -1,4 +1,4 @@
-@api @issue-1289 @issue-1328
+@issue-1289 @issue-1328
 Feature: accept/decline shares coming from internal users
   As a user
   I want to have control of which received shares I accept

tests/acceptance/features/coreApiShareManagementToShares/acceptSharesToSharesFolder.feature

@@ -1,4 +1,3 @@
-@api
 Feature: accept/decline shares coming from internal users to the Shares folder
   As a user
   I want to have control of which received shares I accept

tests/acceptance/features/coreApiShareManagementToShares/mergeShare.feature

@@ -1,4 +1,4 @@
-@api @issue-1328 @issues-1289
+@issue-1328 @issues-1289
 Feature: sharing
 
   Background:

tests/acceptance/features/coreApiShareManagementToShares/moveReceivedShare.feature

@@ -1,4 +1,4 @@
-@api @issue-1289 @issue-1328
+@issue-1289 @issue-1328
 Feature: sharing
 
   Background:

tests/acceptance/features/coreApiShareManagementToShares/moveShareInsideAnotherShare.feature

@@ -1,4 +1,3 @@
-@api
 Feature: moving a share inside another share
   As a user
   I want to move a shared resource inside another shared resource
@@ -53,7 +52,7 @@ Feature: moving a share inside another share
     And as "Alice" file "/folderA/localFolder/localFile.txt" should exist
     And as "Brian" file "/Shares/folderA/localFolder/localFile.txt" should exist
 
-  
+
   Scenario: share receiver tries to move a whole share inside a local folder
     Given user "Brian" has created folder "localFolder"
     And user "Brian" has uploaded file with content "local text" to "/localFolder/localFile.txt"