How to Hide the Edit Tab in a Ribbon

In SharePoint 2010, add the following code to a CEWP.

<script type="text/javascript">// <![CDATA[

function ResetRibbon() {

try {

var ribbon = SP.Ribbon.PageManager.get_instance().get_ribbon();

SelectRibbonTab("Ribbon.Read", true);

ribbon.removeChild('Ribbon.ListForm.Display');

ribbon.removeChild('Ribbon.ListForm.Edit');

} catch (e)

{ }

}

SP.SOD.executeOrDelayUntilScriptLoaded(function () {

try

{

var pm = SP.Ribbon.PageManager.get_instance();

pm.add_ribbonInited(function () {

ResetRibbon();

});

var ribbon = null;

try {

ribbon = pm.get_ribbon();

}

catch (e) { }

if (!ribbon) {

if (typeof (_ribbonStartInit) == "function")

_ribbonStartInit(_ribbon.initialTabId, false, null);

}

else {

ResetRibbon();

}

},

"sp.ribbon.js");

}catch(e)

{}

// ]]></script>

<script type="text/javascript">

function ResetRibbon() {

try {

var ribbon = SP.Ribbon.PageManager.get_instance().get_ribbon();

SelectRibbonTab("Ribbon.Read", true);

ribbon.removeChild("Ribbon.ListForm.Display");

ribbon.removeChild("Ribbon.ListForm.Edit");

} catch (e)

{ }

}

SP.SOD.executeOrDelayUntilScriptLoaded(function () {

try {

var pm = SP.Ribbon.PageManager.get_instance();

pm.add_ribbonInited(function () {

ResetRibbon();

});

var ribbon = null;

try {

ribbon = pm.get_ribbon();

}

catch (e) { }

if (!ribbon) {

if (typeof (_ribbonStartInit) == "function")

_ribbonStartInit(_ribbon.initialTabId, false, null);

}

else {

ResetRibbon();

}

} catch (e)

{ }

}, "sp.ribbon.js");

</script>

and the tab will disappear :) 

Source: http://sharepoint247.wordpress.com/2013/05/24/javascript-to-hide-or-select-specific-tabs-in-sharepoint-ribbon/

Remove Content Approval Message from Forms.

Whenever a SharePoint list requires content approval for submitted items, you will find the following message on  your new item forms:

"'Items on this list require content approval. Your submission will not appear in public views until approved by someone with proper rights.'"

I find this message very confusing to my users so I often remove it. 

To remove the message,

1. Go to 'List settings' and then 'Advanced settings'
2. Scroll down to 'Dialogs' 
3. Select 'No' under 'Launch forms in a dialog?' then select 'OK'
4. Go back to your list and select 'Add new item'. Your new item form will open as a page.
5. Go to 'Site Actions ' and select 'Edit Page'
6. Add a CEWP (Content Editor Web Part)
7. Edit the web part's html source code 
8. Enter the following CSS: 

<style>
.ms-informationbar{visibility:hidden;}</style>

    10. Click save 

The message will be removed from the form. 

If you want your forms to open as dialogues again, simply follow steps 1-3. However, in step 3 select 'Yes' instead.