crypto: Remove duplicate PSA_CRYPTO_INIT

PSA_CRYPTO_INIT is defined as a service identifier. We don't need to
redefine it as a secure function. There is only one function under this
service identifier, so no secure function definitions are necessary to
differentiate between.

Author: Patater

components/TARGET_PSA/services/crypto/COMPONENT_PSA_SRV_IPC/crypto_platform_spe.h

@@ -40,7 +40,6 @@
 /** \brief psa_s_function_t enum defines for all the available functions in PSA Crypto. */
 typedef enum psa_sec_function_s {
     PSA_CRYPTO_INVALID,
-    PSA_CRYPTO_INIT,
     PSA_IMPORT_KEY,
     PSA_ALLOCATE_KEY,
     PSA_CREATE_KEY,