style: drop redundant EOL comments flagged by ktlint in Hex.kt

New KDoc blocks on isHex/isHex64 already state the "~47ns" and
"~30% faster" perf notes, so the trailing EOL comments between the
KDoc and the function now trip ktlint's standard:no-consecutive-comments
rule ("an EOL comment may not be preceded by a KDoc"). Remove them.

Co-Authored-By: Claude Opus 4.8 <noreply@anthropic.com>
Claude-Session: https://claude.ai/code/session_01BawgXifvcPidMMqJ719Ka2

quartz/src/commonMain/kotlin/com/vitorpamplona/quartz/utils/Hex.kt

@@ -60,7 +60,6 @@ object Hex {
      * emoji in `p` tags) instead of throwing. ~47ns in debug on the Emulator;
      * use [isHex64] when the length is known to be 64.
      */
-    // 47ns in debug on the Emulator
     fun isHex(hex: String?): Boolean {
         if (hex == null) return false
         if (hex.length and 1 != 0) return false
@@ -93,7 +92,6 @@ object Hex {
      * the length is fixed and the checks are unrolled. Assumes [hex] is at least
      * 64 chars long; it does not verify the total length.
      */
-    // 30% faster than isHex
     fun isHex64(hex: String): Boolean =
         try {
             hexToByte[hex[0].code] >= 0 &&