chore: remove orphaned broker-overview CSS classes

apps/frontend/src/styles.css

@@ -94,68 +94,12 @@ a {
   z-index: 1;
 }
 
-.broker-overview {
-  display: grid;
-  gap: 24px;
-}
-
-.broker-overview__summary,
-.broker-overview__assets {
-  display: grid;
-  grid-template-columns: repeat(2, minmax(0, 1fr));
-  gap: 12px;
-}
-
-.broker-overview__card,
-.broker-allocation {
-  padding: 16px;
-  border: 1px solid #e0e0e0;
-  border-radius: var(--border-radius);
-  background: var(--color-surface);
-}
-
-.broker-overview__card {
-  display: grid;
-  align-content: start;
-  gap: 8px;
-}
-
-.broker-overview__label,
-.broker-overview__card > span {
-  color: var(--color-text-secondary);
-}
-
-.broker-overview__total {
-  font-size: 24px;
-}
-
-.broker-overview__cash,
 .broker-allocation ul {
   list-style: none;
   display: grid;
   gap: 8px;
 }
 
-.broker-overview__cash li {
-  display: flex;
-  justify-content: space-between;
-  gap: 12px;
-}
-
-.broker-overview__asset-link {
-  color: var(--color-text);
-}
-
-.broker-overview__asset-title {
-  color: var(--color-primary);
-  font-size: 18px;
-}
-
-.broker-overview__asset-link:focus-visible {
-  outline: 3px solid color-mix(in srgb, var(--color-primary) 35%, transparent);
-  outline-offset: 2px;
-}
-
 .broker-allocation {
   display: flex;
   align-items: center;