plat-stm32mp1: conf: restore generic default heap size

Remove reduced default heap size configuration of 48kB when pager is
enabled on stm32mp1 platforms. 48kB of core heap may not always be enough
to pass OP-TEE Test regression test 4011 related to Bleichenbacher attack
since it consumes 4.5kB more memory on in OP-TEE core since we upgraded
to Mbed TLS library 3.6.0. The platform now default uses the generic 64kB
default heap size set from mk/config.mk.

Signed-off-by: Etienne Carriere <etienne.carriere@foss.st.com>
Acked-by: Gatien Chevallier <gatien.chevallier@foss.st.com>

core/arch/arm/plat-stm32mp1/conf.mk

@@ -346,9 +346,6 @@ CFG_TEE_CORE_DEBUG ?= n
 CFG_UNWIND ?= n
 CFG_LOCKDEP ?= n
 CFG_TA_BGET_TEST ?= n
-# Default disable early TA compression to support a smaller HEAP size
-CFG_EARLY_TA_COMPRESS ?= n
-CFG_CORE_HEAP_SIZE ?= 49152
 endif
 
 # Non-secure UART and GPIO/pinctrl for the output console