Revert "add a check for overlow in event loop"

This reverts commit 1042c73829.

llarp/ev_epoll.hpp

@@ -32,11 +32,9 @@ namespace llarp
       sockaddr_in6 src;
       socklen_t slen = sizeof(sockaddr_in6);
       sockaddr* addr = (sockaddr*)&src;
-      ssize_t ret    = ::recvfrom(fd, buf, sz, 0, addr, &slen);
+      int ret        = ::recvfrom(fd, buf, sz, 0, addr, &slen);
       if(ret == -1)
         return -1;
-      if(sz < ret)
-        return -1;
       udp->recvfrom(udp, addr, buf, ret);
       return 0;
     }

llarp/ev_kqueue.hpp

@@ -46,8 +46,6 @@ namespace llarp
         llarp::LogWarn("recvfrom failed");
         return -1;
       }
-      if(sz < ret)
-        return -1;
       // Addr is the source
       udp->recvfrom(udp, addr, buf, ret);
       return 0;

llarp/ev_win32.hpp

@@ -32,9 +32,6 @@ namespace llarp
     int
     getData(void* buf, size_t sz, size_t ret)
     {
-      // make sure it's not too big
-      if(sz < ret)
-        return -1;
       iosz = ret;
       return read(buf, sz);
     }