fix: Remove Proxima Nova font file

Signed-off-by: TheYoungManLi <cjl@kubesphere.io>

assets/scss/common.scss

@@ -4,7 +4,7 @@
 @import 'footer';
 
 body {
-  font-family: $font-family-2;
+  font-family: $font-family-1;
   overflow-x: hidden;
 }
 

assets/scss/doc.scss

@@ -853,7 +853,6 @@ footer {
 
         p {
             width: 360px;
-            font-family: 'Proxima Nova';
             font-size: 16px;
             line-height: 22px;
             color: #919AA3;

assets/scss/variables.scss

@@ -2,5 +2,4 @@ $font-family: 'PingFang SC', 'Lantinghei SC', 'Helvetica Neue', Helvetica, Arial
   'Microsoft YaHei', 微软雅黑, STHeitiSC-Light, simsun, 宋体,
   'WenQuanYi Zen Hei', 'WenQuanYi Micro Hei', sans-serif;
 $font-family-1: Roboto, $font-family;
-$font-family-2: Proxima Nova, $font-family;
 $mobile-max-width: 768px;

static/fonts/ProximaNova/stylesheet.css

@@ -1,54 +0,0 @@
-@font-face {
-    font-family: 'Proxima Nova';
-    src: url('./ProximaNova-Bold.woff2') format('woff2'),
-        url('./ProximaNova-Bold.woff') format('woff'),
-        url('./ProximaNova-Bold.ttf') format('truetype');
-    font-weight: bold;
-    font-style: normal;
-}
-
-@font-face {
-    font-family: 'Proxima Nova';
-    src: url('./ProximaNova-Light.woff2') format('woff2'),
-        url('./ProximaNova-Light.woff') format('woff'),
-        url('./ProximaNova-Light.ttf') format('truetype');
-    font-weight: 300;
-    font-style: normal;
-}
-
-@font-face {
-    font-family: 'Proxima Nova';
-    src: url('./ProximaNova-Regular.woff2') format('woff2'),
-        url('./ProximaNova-Regular.woff') format('woff'),
-        url('./ProximaNova-Regular.ttf') format('truetype');
-    font-weight: normal;
-    font-style: normal;
-}
-
-@font-face {
-    font-family: 'Proxima Nova';
-    src: url('./ProximaNova-Semibold.woff2') format('woff2'),
-        url('./ProximaNova-Semibold.woff') format('woff'),
-        url('./ProximaNova-Semibold.ttf') format('truetype');
-    font-weight: 600;
-    font-style: normal;
-}
-
-@font-face {
-    font-family: 'Proxima Nova';
-    src: url('./ProximaNova-SemiboldIt.woff2') format('woff2'),
-        url('./ProximaNova-SemiboldIt.woff') format('woff'),
-        url('./ProximaNova-SemiboldIt.ttf') format('truetype');
-    font-weight: 600;
-    font-style: italic;
-}
-
-@font-face {
-    font-family: 'Proxima Nova';
-    src: url('./ProximaNova-Regular_1.woff2') format('woff2'),
-        url('./ProximaNova-Regular_1.woff') format('woff'),
-        url('./ProximaNova-Regular_1.ttf') format('truetype');
-    font-weight: normal;
-    font-style: normal;
-}
-