Use proper paths in mapper services

Using /usr/bin/env is now an antipattern.

Signed-off-by: Matt Spinler <spinler@us.ibm.com>
Change-Id: I18c05ea0f962b989ecbedc8019f63f673cb4b9ef
diff --git a/meta-phosphor/recipes-phosphor/dbus/phosphor-mapper/mapper-subtree-remove@.service b/meta-phosphor/recipes-phosphor/dbus/phosphor-mapper/mapper-subtree-remove@.service
index 4fad8fa..835c947 100644
--- a/meta-phosphor/recipes-phosphor/dbus/phosphor-mapper/mapper-subtree-remove@.service
+++ b/meta-phosphor/recipes-phosphor/dbus/phosphor-mapper/mapper-subtree-remove@.service
@@ -8,5 +8,4 @@
 RemainAfterExit=no
 Restart=on-failure
 TimeoutStartSec=infinity
-ExecStart=/usr/bin/env mapper subtree-remove %I
-SyslogIdentifier=mapper
+ExecStart=/usr/bin/mapper subtree-remove %I
diff --git a/meta-phosphor/recipes-phosphor/dbus/phosphor-mapper/mapper-wait@.service b/meta-phosphor/recipes-phosphor/dbus/phosphor-mapper/mapper-wait@.service
index d613090..06e2e46 100644
--- a/meta-phosphor/recipes-phosphor/dbus/phosphor-mapper/mapper-wait@.service
+++ b/meta-phosphor/recipes-phosphor/dbus/phosphor-mapper/mapper-wait@.service
@@ -8,5 +8,4 @@
 RemainAfterExit=yes
 Restart=on-failure
 TimeoutStartSec=infinity
-ExecStart=/usr/bin/env mapper wait %I
-SyslogIdentifier=mapper
+ExecStart=/usr/bin/mapper wait %I
diff --git a/meta-phosphor/recipes-phosphor/dbus/phosphor-mapper/xyz.openbmc_project.ObjectMapper.service b/meta-phosphor/recipes-phosphor/dbus/phosphor-mapper/xyz.openbmc_project.ObjectMapper.service
index 5f7bd95..d57ec31 100644
--- a/meta-phosphor/recipes-phosphor/dbus/phosphor-mapper/xyz.openbmc_project.ObjectMapper.service
+++ b/meta-phosphor/recipes-phosphor/dbus/phosphor-mapper/xyz.openbmc_project.ObjectMapper.service
@@ -6,11 +6,10 @@
 [Service]
 Restart=always
 Type=dbus
-ExecStart=/usr/bin/env mapperx \
+ExecStart=/usr/bin/mapperx \
         --service-namespaces="${{MAPPER_SERVICES}}" \
         --interface-namespaces="${{MAPPER_INTERFACES}}" \
         --service-blacklists="${{MAPPER_SERVICEBLACKLISTS}}"
-SyslogIdentifier=phosphor-mapper
 BusName={BUSNAME}
 TimeoutStartSec=300
 RestartSec=5