Remove old indicator selector (fix was backported to 3.3.x)

Author: krassowski

atest/05_Features/Completion.robot

@@ -11,7 +11,6 @@ Force Tags          feature:completion
 *** Variables ***
 ${COMPLETER_BOX}            css:.jp-Completer.jp-HoverBox
 ${DOCUMENTATION_PANEL}      css:.jp-Completer-docpanel
-${KERNEL_BUSY_INDCA_OLD}    css:.jp-NotebookPanel-toolbar div[title="Kernel Busy"]
 ${KERNEL_BUSY_INDICATOR}    css:.jp-Notebook-ExecutionIndicator[data-status="busy"]
 
 
@@ -452,20 +451,12 @@ Should Complete While Kernel Is Busy
     # Lab Command    Run Selected Cells And Don't Advance
     Press Keys    None    CTRL+ENTER
     # Confirm that the kernel is busy
-    IF    '${LAB VERSION}'.startswith('3.4')
-        Wait Until Page Contains Element    ${KERNEL_BUSY_INDICATOR}    timeout=5s
-    ELSE
-        Wait Until Page Contains Element    ${KERNEL_BUSY_INDCA_OLD}    timeout=5s
-    END
+    Wait Until Page Contains Element    ${KERNEL_BUSY_INDICATOR}    timeout=5s
     # Enter a cell with "t"
     Enter Cell Editor    18
     # Check if completion worked
     Enter Cell Editor    1    line=2
     Trigger Completer    timeout=10s
     Completer Should Suggest    test
     # Confirm that the kernel indicator was busy all along
-    IF    '${LAB VERSION}'.startswith('3.4')
-        Page Should Contain Element    ${KERNEL_BUSY_INDICATOR}
-    ELSE
-        Page Should Contain Element    ${KERNEL_BUSY_INDCA_OLD}
-    END
+    Page Should Contain Element    ${KERNEL_BUSY_INDICATOR}