Removed unused styles

src/styles/history.less

@@ -1,36 +0,0 @@
-.history {
-    flex: 1;
-    padding: 10px;
-    display: flex;
-    flex-direction: column;
-
-    border: 1px solid red;
-
-    .history-transaction {
-
-        
-
-        .amount, .time, .address {
-            margin-left: 10px;
-        }
-
-        &.in {
-            color: green;
-            .amount {
-                &:before {
-                    content: '+'
-                }
-            }
-        }
-
-        &.out {
-            color: red;
-            .amount {
-                &:before {
-                    content: '-'
-                }
-            }
-        }
-    }
-}
-

src/styles/index.less

@@ -9,7 +9,6 @@
 @import './reactSelect.less';
 @import './rcTooltip.less';
 
-@import './history.less';
 @import './send.less';
 @import './receive.less';
 @import './summary.less';