verbosity: drop duplicate printf on macOS emit path

Every log line on macOS appeared twice in terminal output:

  [INFO][Audio] Started synchronous audio driver
  [INFO][Audio] Started synchronous audio driver
  [INFO][Display] Found display driver: "gl"
  [INFO][Display] Found display driver: "gl"

ROOT CAUSE: the TARGET_OS_MAC emit block in RARCH_LOG_V() wrote the
same line twice - once via printf() to stdout, then again via
fprintf(fp, ...).  fp defaults to stderr (retro_main_log_file_init
line 181), only overridden when the user configures an explicit log
file path.  So with no log file (the common case), fp == stderr and
both writes hit the same terminal.

Every other platform branch in the same function writes only to fp:
Qt/WinRT, Android (via __android_log_vprint), and the generic #else
fallback.  The macOS block was the lone outlier.

FIX: drop the printf().  Terminal visibility is preserved because
fp defaults to stderr; users who configure an explicit log file see
the log in that file only, as on every other platform.

The dupe has existed since the TARGET_OS_OSX block was first added;
it became user-visible on PPC/Leopard after 77cd5bc widened the
condition from TARGET_OS_OSX to TARGET_OS_MAC && !TARGET_OS_IPHONE
(10.5 doesn't define TARGET_OS_OSX).

Author: LibretroAdmin

verbosity.c

@@ -321,7 +321,6 @@ void RARCH_LOG_V(const char *tag, const char *fmt, va_list ap)
          }
 
 #if TARGET_OS_MAC && !TARGET_OS_IPHONE
-         printf("%s %s", tag_v, buffer);
          if (fp)
          {
             fprintf(fp, "%s %s", tag_v, buffer);