Remove unnecessary key props to react elements

These were added in 328c7f1 as part of
a debugging effort to get to the bottom of why react was raising an
error about missing key props. The root cause actually turned out to be
missing key props on the element surrounding the contact info (see
328c7f1 for the fix), but these are
leftover from then.

src/client/components/pages/NonClassMeetings/NonClassMeetingsTable.tsx

@@ -86,15 +86,15 @@ const NonClassMeetingsTable: FunctionComponent<NonClassMeetingsTableProps> = ({
         </TableHeadingCell>
       </TableRow>
       <TableRow isStriped>
-        <TableHeadingCell key="area">Area</TableHeadingCell>
-        <TableHeadingCell key="title">Title</TableHeadingCell>
-        <TableHeadingCell key="expectedSize">Expected Size</TableHeadingCell>
-        <TableHeadingCell key="notes">Notes</TableHeadingCell>
-        <TableHeadingCell key="contactInfo">Contact Info</TableHeadingCell>
-        <TableHeadingCell key="springRoom">Room</TableHeadingCell>
-        <TableHeadingCell key="fallRoom">Room</TableHeadingCell>
-        <TableHeadingCell key="detail">Detail</TableHeadingCell>
-        <TableHeadingCell key="editMeeting">Edit Meeting</TableHeadingCell>
+        <TableHeadingCell>Area</TableHeadingCell>
+        <TableHeadingCell>Title</TableHeadingCell>
+        <TableHeadingCell>Expected Size</TableHeadingCell>
+        <TableHeadingCell>Notes</TableHeadingCell>
+        <TableHeadingCell>Contact Info</TableHeadingCell>
+        <TableHeadingCell>Room</TableHeadingCell>
+        <TableHeadingCell>Room</TableHeadingCell>
+        <TableHeadingCell>Detail</TableHeadingCell>
+        <TableHeadingCell>Edit Meeting</TableHeadingCell>
       </TableRow>
     </TableHead>
     <TableBody>
@@ -112,11 +112,11 @@ const NonClassMeetingsTable: FunctionComponent<NonClassMeetingsTableProps> = ({
           fall,
         }, index) => (
           <TableRow isStriped={index % 2 !== 0} key={id}>
-            <TableCell backgroundColor={getAreaColor(area)} key={`area-${id}`}>{area}</TableCell>
-            <TableCell key={`title-${id}`}>{title}</TableCell>
-            <TableCell key={`expectedSize-${id}`}>{expectedSize}</TableCell>
-            <TableCell key={`notes-${id}`}>{notes}</TableCell>
-            <TableCell key={`contactInfo-${id}`}>
+            <TableCell backgroundColor={getAreaColor(area)}>{area}</TableCell>
+            <TableCell>{title}</TableCell>
+            <TableCell>{expectedSize}</TableCell>
+            <TableCell>{notes}</TableCell>
+            <TableCell>
               {
                 /*
                   * This is being used instead of just outputting the fields
@@ -138,7 +138,7 @@ const NonClassMeetingsTable: FunctionComponent<NonClassMeetingsTableProps> = ({
                   .map((info) => (<p key={info}>{info}</p>))
               }
             </TableCell>
-            <TableCell key={`fallMeetings-${id}`}>
+            <TableCell>
               <CellLayout>
                 <TableCellList>
                   {fall.meetings.map(({
@@ -170,15 +170,14 @@ const NonClassMeetingsTable: FunctionComponent<NonClassMeetingsTableProps> = ({
                 </TableCellList>
                 <BorderlessButton
                   id={`${id}-${spring.term}-edit-meetings-button`}
-                  key={`${id}-${spring.term}-edit-meetings-button`}
                   onClick={() => {}}
                   variant={VARIANT.INFO}
                 >
                   <FontAwesomeIcon icon={faEdit} />
                 </BorderlessButton>
               </CellLayout>
             </TableCell>
-            <TableCell key={`springMeetings-${id}`}>
+            <TableCell>
               <CellLayout>
                 <TableCellList>
                   {spring.meetings.map(({
@@ -210,7 +209,6 @@ const NonClassMeetingsTable: FunctionComponent<NonClassMeetingsTableProps> = ({
                 </TableCellList>
                 <BorderlessButton
                   id={`${id}-${spring.term}-edit-meetings-button`}
-                  key={`${id}-${spring.term}-edit-meetings-button`}
                   onClick={() => {}}
                   variant={VARIANT.INFO}
                 >