lavc/libkvazaar,libopenh264enc: drop redundant checks

The same check is present in encode_preinit_video().

libavcodec/libkvazaar.c

@@ -85,11 +85,6 @@ static av_cold int libkvazaar_init(AVCodecContext *avctx)
         cfg->framerate_num   = avctx->framerate.num;
         cfg->framerate_denom = avctx->framerate.den;
     } else {
-        if (avctx->ticks_per_frame > INT_MAX / avctx->time_base.num) {
-            av_log(avctx, AV_LOG_ERROR,
-                   "Could not set framerate for kvazaar: integer overflow\n");
-            return AVERROR(EINVAL);
-        }
         cfg->framerate_num   = avctx->time_base.den;
         cfg->framerate_denom = avctx->time_base.num * avctx->ticks_per_frame;
     }

libavcodec/libopenh264enc.c

@@ -139,11 +139,6 @@ static av_cold int svc_encode_init(AVCodecContext *avctx)
     if (avctx->framerate.num > 0 && avctx->framerate.den > 0) {
         param.fMaxFrameRate = av_q2d(avctx->framerate);
     } else {
-        if (avctx->ticks_per_frame > INT_MAX / avctx->time_base.num) {
-            av_log(avctx, AV_LOG_ERROR,
-                   "Could not set framerate for libopenh264enc: integer overflow\n");
-            return AVERROR(EINVAL);
-        }
         param.fMaxFrameRate = 1.0 / av_q2d(avctx->time_base) / FFMAX(avctx->ticks_per_frame, 1);
     }
     param.iPicWidth                  = avctx->width;