Remove Creative Zen Vision and Vision:M ports

They haven't seen development activity for the better part
of two decades and apparently were never able to even boot
to Rockbox, although the Rockbox bootloader could load the
original firmware.

Change-Id: I5cfa5909c21feaf2825aa685a05e78044b893a13

manual/plugins/xworld.tex

@@ -49,12 +49,12 @@ Additionally, ``extra'' data files that modify the in-game strings and font can
     \opt{SAMSUNG_YH92X_PAD}{\ButtonFF}
     \opt{IRIVER_H300_PAD,SANSA_E200_PAD,SAMSUNG_YH820_PAD,IAUDIO_X5M5_PAD}{\ButtonRec}
     \opt{IPOD_4G_PAD,IPOD_3G_PAD,IPOD_1G2G_PAD,CREATIVE_ZEN_PAD,SANSA_CLIP_PAD}{\ButtonSelect}
-    \opt{SONY_NWZ_PAD,CREATIVEZVM_PAD}{\ButtonPlay}
+    \opt{SONY_NWZ_PAD}{\ButtonPlay}
     \opt{ONDAVX777_PAD,MROBE500_PAD,PBELL_VIBE500_PAD}{\ButtonPower}
     \opt{SAMSUNG_YPR0_PAD}{\ButtonUser}
     \opt{IRIVER_H10_PAD}{\ButtonRew}
     \opt{HM801_PAD}{\ButtonPrev}
-    \opt{SONY_NWZ_PAD,CREATIVEZVM_PAD}{\ButtonPlay}
+    \opt{SONY_NWZ_PAD}{\ButtonPlay}
     \opt{MROBE500_PAD}{\ButtonPower}
     \opt{DX50_PAD,ONDAVX747_PAD,PHILIPS_HDD1630_PAD,PHILIPS_HDD6330_PAD,PHILIPS_SA9200_PAD%
         ,CREATIVE_ZENXFI2_PAD,CREATIVE_ZENXFI3_PAD,SANSA_CONNECT_PAD,SANSA_C200_PAD%
@@ -73,7 +73,7 @@ Additionally, ``extra'' data files that modify the in-game strings and font can
     \opt{SAMSUNG_YH820_PAD,IAUDIO_X5M5_PAD}{\ButtonPlay}
     \opt{SANSA_E200_PAD,SANSA_CLIP_PAD}{\ButtonPower}
     \opt{CREATIVE_ZEN_PAD,SONY_NWZ_PAD}{\ButtonBack}
-    \opt{CREATIVEZVM_PAD,SAMSUNG_YPR0_PAD}{\ButtonMenu}
+    \opt{SAMSUNG_YPR0_PAD}{\ButtonMenu}
     \opt{IRIVER_H300_PAD}{\ButtonMode}
     \opt{HM801_PAD}{\ButtonNext}
     \opt{PBELL_VIBE500_PAD}{\ButtonRec}