[mobile] Fixed app logo.

apps/common/mobile/resources/img/about/onlyoffice.svg

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\ No newline at end of file

apps/common/mobile/resources/less/ios/_about.less

@@ -32,14 +32,6 @@
   }
 
   .logo {
-    background-image: url('../../../../common/mobile/resources/img/about/onlyoffice.png');
-
-    @media
-    only screen and (-webkit-min-device-pixel-ratio: 2),
-    only screen and (min-resolution: 2dppx),
-    only screen and (min-resolution: 192dpi) {
-      background-image: url('../../../../common/mobile/resources/img/about/onlyoffice@2x.png');
-      background-size: auto;
-    }
+    background: url('../../../../common/mobile/resources/img/about/onlyoffice.svg') no-repeat center;
   }
 }
\ No newline at end of file

apps/common/mobile/resources/less/material/_about.less

@@ -33,13 +33,6 @@
   }
 
   .logo {
-    background: url('../../../../common/mobile/resources/img/about/onlyoffice.png') 50% 50% no-repeat;
-
-    @media
-    only screen and (-webkit-min-device-pixel-ratio: 2),
-    only screen and (min-resolution: 2dppx),
-    only screen and (min-resolution: 192dpi) {
-      background-image: url('../../../../common/mobile/resources/img/about/onlyoffice@2x.png');
-    }
+    background: url('../../../../common/mobile/resources/img/about/onlyoffice.svg') no-repeat center;
   }
 }
\ No newline at end of file