Remove obsolete code from resource file

Changes:
   - Code clean up

Tested: - NA
Change-Id: If0374898d47c7b03bdaa08de40098bc50e4b3f83
Signed-off-by: George Keishing <gkeishin@in.ibm.com>
diff --git a/lib/resource.robot b/lib/resource.robot
index 53ec1b8..44abbec 100755
--- a/lib/resource.robot
+++ b/lib/resource.robot
@@ -185,21 +185,3 @@
 
 # Task Service related variables.
 ${TASK_JSON_FILE_PATH}   data/task_state.json
-
-
-*** Keywords ***
-
-Get Inventory Schema
-    [Documentation]  Get inventory schema.
-    [Arguments]    ${machine}
-    RETURN    &{INVENTORY}[${machine}]
-
-Get Inventory Items Schema
-    [Documentation]  Get inventory items schema.
-    [Arguments]    ${machine}
-    RETURN    &{INVENTORY_ITEMS}[${machine}]
-
-Get Sensor Schema
-    [Documentation]  Get sensors schema.
-    [Arguments]    ${machine}
-    RETURN    &{SENSORS}[${machine}]