Changed PINDA_MINTEMP having own value

Prevent bad readings/issues if someone changes the bed thermistor that is "better" with lower min values and creates a custom firmware.
The firmware will now be in the range of the PINDAv2 thermistor independant from the bed thermistor (which may change and need adjustments)

Firmware/variants/1_75mm_MK25-RAMBo10a-E3Dv6full.h

@@ -176,7 +176,7 @@
 #error "Check maximal allowed value @ ShortTimer (see BED_MINTEMP_DELAY definition)"
 #endif
 #define SUPERPINDA_SUPPORT
-#define PINDA_MINTEMP BED_MINTEMP //The miniRAMBo thermistor readings below 30°C aren't very accurate
+#define PINDA_MINTEMP 30 //The miniRAMBo thermistor readings below 30°C aren't very accurate
 
 // Maxtemps
 #if defined(E3D_PT100_EXTRUDER_WITH_AMP) || defined(E3D_PT100_EXTRUDER_NO_AMP)

Firmware/variants/1_75mm_MK25-RAMBo13a-E3Dv6full.h

@@ -177,7 +177,7 @@
 #error "Check maximal allowed value @ ShortTimer (see BED_MINTEMP_DELAY definition)"
 #endif
 #define SUPERPINDA_SUPPORT
-#define PINDA_MINTEMP BED_MINTEMP //The miniRAMBo thermistor readings below 30°C aren't very accurate
+#define PINDA_MINTEMP 30 //The miniRAMBo thermistor readings below 30°C aren't very accurate
 
 // Maxtemps
 #if defined(E3D_PT100_EXTRUDER_WITH_AMP) || defined(E3D_PT100_EXTRUDER_NO_AMP)

Firmware/variants/1_75mm_MK25S-RAMBo10a-E3Dv6full.h

@@ -176,7 +176,7 @@
 #error "Check maximal allowed value @ ShortTimer (see BED_MINTEMP_DELAY definition)"
 #endif
 #define SUPERPINDA_SUPPORT
-#define PINDA_MINTEMP BED_MINTEMP //The miniRAMBo thermistor readings below 30°C aren't very accurate
+#define PINDA_MINTEMP 30 //The miniRAMBo thermistor readings below 30°C aren't very accurate
 
 // Maxtemps
 #if defined(E3D_PT100_EXTRUDER_WITH_AMP) || defined(E3D_PT100_EXTRUDER_NO_AMP)

Firmware/variants/1_75mm_MK25S-RAMBo13a-E3Dv6full.h

@@ -177,7 +177,7 @@
 #error "Check maximal allowed value @ ShortTimer (see BED_MINTEMP_DELAY definition)"
 #endif
 #define SUPERPINDA_SUPPORT
-#define PINDA_MINTEMP BED_MINTEMP //The miniRAMBo thermistor readings below 30°C aren't very accurate
+#define PINDA_MINTEMP 30 //The miniRAMBo thermistor readings below 30°C aren't very accurate
 
 // Maxtemps
 #if defined(E3D_PT100_EXTRUDER_WITH_AMP) || defined(E3D_PT100_EXTRUDER_NO_AMP)

Firmware/variants/1_75mm_MK3-EINSy10a-E3Dv6full.h

@@ -295,7 +295,7 @@
 #error "Check maximal allowed value @ ShortTimer (see BED_MINTEMP_DELAY definition)"
 #endif
 #define SUPERPINDA_SUPPORT
-#define PINDA_MINTEMP BED_MINTEMP
+#define PINDA_MINTEMP 10
 #define AMBIENT_MINTEMP -30
 
 // Maxtemps

Firmware/variants/1_75mm_MK3S-EINSy10a-E3Dv6full.h

@@ -297,7 +297,7 @@
 #error "Check maximal allowed value @ ShortTimer (see BED_MINTEMP_DELAY definition)"
 #endif
 #define SUPERPINDA_SUPPORT
-#define PINDA_MINTEMP BED_MINTEMP
+#define PINDA_MINTEMP 10
 #define AMBIENT_MINTEMP -30
 
 // Maxtemps