chore(less): Remove unused tooltip-owners class (#15457)

src/sentry/static/sentry/less/includes/tooltips.less

@@ -119,80 +119,3 @@
     }
   }
 }
-
-// Owners
-
-.tooltip-owners {
-  max-width: 310px !important;
-  text-align: left;
-  font-weight: normal;
-  font-size: 13px;
-  padding: 6px 15px;
-
-  .tooltip-owners-heading {
-    .clearfix;
-    margin-bottom: 2px;
-  }
-
-  .tooltip-owners-name,
-  .tooltip-owners-date {
-    font-size: 12px;
-  }
-
-  .tooltip-owners-name {
-    font-weight: bold;
-  }
-
-  .tooltip-owners-date {
-    color: @40;
-  }
-
-  ul.tooltip-owners-commits {
-    .list-unstyled;
-    margin: 0 0 5px;
-
-    li.tooltip-owners-commit {
-      position: relative;
-      line-height: 1.4;
-      margin-bottom: 4px;
-
-      &:before {
-        display: block;
-        position: absolute;
-        content: '';
-        left: -15px;
-        top: 8px;
-        width: 5px;
-        height: 2px;
-        background: @70;
-      }
-    }
-  }
-
-  // Unknown member
-
-  .tooltip-owners-unknown {
-    padding: 14px 0 0;
-    text-align: center;
-
-    .icon-circle-cross {
-      font-size: 18px;
-      color: @red;
-      vertical-align: text-top;
-      margin-right: 6px;
-    }
-
-    .tooltip-owners-unknown-email {
-      font-size: 15px;
-    }
-
-    p {
-      line-height: 1.4;
-      margin: 0 0 10px;
-
-      &:last-child {
-        margin-bottom: 0;
-      }
-    }
-  }
-}