Remove build material design icons from podfile (#2754)

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## Summary
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importantly what they aim to achieve -->
Since the script can't run in podfile anymore and now it has been moved
to build phases, Im removing it from podfile
## Screenshots
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## Link to pull request in Documentation repository
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Documentation: home-assistant/companion.home-assistant#

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Podfile

@@ -21,8 +21,6 @@ end
 
 plugin 'cocoapods-acknowledgements'
 
-system('./Tools/BuildMaterialDesignIconsFont.sh')
-
 pod 'Alamofire', '~> 5.8'
 pod 'Communicator', git: 'https://github.com/zacwest/Communicator.git', branch: 'observation-memory-direct'
 pod 'KeychainAccess'

Podfile.lock

@@ -284,6 +284,6 @@ SPEC CHECKSUMS:
   XCGLogger: 1943831ef907df55108b0b18657953f868de973b
   ZIPFoundation: d170fa8e270b2a32bef9dcdcabff5b8f1a5deced
 
-PODFILE CHECKSUM: f7cf246bacbd480c5e00b88f64aa5fa8de1d9d1e
+PODFILE CHECKSUM: 1d5c1036260125718d79a049e4c2a69bdf1b4aff
 
 COCOAPODS: 1.15.2