Fix selecting ALL filter and changing it to default on Physical Infra

[hstastna]

Fixes: https://bugzilla.redhat.com/show_bug.cgi?id=1567416

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Fix selecting ALL filter and changing it to Default on Physical Infra page
(in Compute -> Physical Infrastructure -> Servers), also on Hosts page.

Steps to Reproduce:

1. Go to
   Compute -> Physical Infrastructure -> Servers or
   Compute -> Infrastructure -> Hosts
2. In accordion, select a filter other than the ALL (Default)
3. Click on the Set Default button to set the selected filter as Default
4. Click on the ALL filter again
   => nothing happened, previously selected filter remained applied and it was not possible to set ALL back to ALL (Default)

Step 4 from steps to reproduce:

Before:

After:

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Details:
Removing unnecessary line of the code fixed the bug. The problem was that default search was loaded (load_default_search method) when clicking on ALL filter because @edit[:selected] was set to false. As I remember, it was me who added the same line to the code some time ago. Adding it was not necessary so I am sure we can remove it.

[hstastna]

@miq-bot add_label bug, gaprindashvili/yes

[hstastna]

@martinpovolny @mzazrivec Could you please look at this simple fix? Thanks! ;)

[miq-bot]

Checked commit hstastna@679df2c with ruby 2.3.3, rubocop 0.52.1, haml-lint 0.20.0, and yamllint 1.10.0
1 file checked, 0 offenses detected
Everything looks fine. 🍪

[hstastna]

What do you think about this fix, @himdel ? :)

[saulotoledo]

I confirm that the fix solves the problem I reported.

[himdel]

The line was introduced in #2225 .. doesn't look like it was to fix a bug, so hopefully this won't break anything.. :)

[hstastna]

@himdel I think it will not break anything. I added the line in that PR because of comment in https://github.com/ManageIQ/manageiq-ui-classic/pull/2225/files#diff-08a3013ef490c3273c6b0ffc7c84a0eaR184 I thought I was doing the right thing. Apparently, not :D Now I see I did not understand well what this line or variable was for.

[himdel]

LGTM, works for me :)