another fix of timeline fonts

frontend/src/index.css

@@ -1,10 +1,3 @@
-@font-face {
-  font-family: "Material Symbols Outlined Local";
-  font-style: normal;
-  font-weight: 400;
-  src: url("/fonts/material-symbols-outlined-timeline.ttf") format("truetype");
-}
-
 
 :root {
   --ink: #1f2a2a;
@@ -1479,26 +1472,10 @@ textarea {
 }
 
 .bird-timeline-graph-icon {
-  display: inline-flex;
-  align-items: center;
-  justify-content: center;
   width: 24px;
   height: 24px;
   color: var(--accent-green);
-  font-family: "Material Symbols Outlined Local";
-  font-size: 20px;
-  font-style: normal;
-  font-weight: 400;
-  line-height: 1;
-  letter-spacing: 0;
-  text-transform: none;
-  white-space: nowrap;
-  direction: ltr;
-  word-wrap: normal;
-  font-variant-ligatures: normal;
-  font-feature-settings: "liga";
-  -webkit-font-feature-settings: "liga";
-  -webkit-font-smoothing: antialiased;
+  fill: currentColor;
 }
 
 .bird-timeline-graph-point.hatch_date .bird-timeline-graph-icon {