ci: minimize installed libboost packages

Change-Id: I8fe048313ff50b00bc09ab912bedaf46008f0a9a
diff --git a/.jenkins.d/10-build.sh b/.jenkins.d/10-build.sh
index fa2c901..9d415d5 100755
--- a/.jenkins.d/10-build.sh
+++ b/.jenkins.d/10-build.sh
@@ -7,9 +7,6 @@
 if [[ $JOB_NAME == *"code-coverage" ]]; then
     COVERAGE="--with-coverage"
 fi
-if [[ -n $DISABLE_PCH ]]; then
-    PCH="--without-pch"
-fi
 
 set -x
 
@@ -21,8 +18,8 @@
     # Cleanup
     ./waf --color=yes distclean
 
-    # Build in release mode without tests, but with "other tests"
-    ./waf --color=yes configure --with-other-tests $PCH
+    # Build in release mode with "other tests" only
+    ./waf --color=yes configure --with-other-tests
     ./waf --color=yes build
 
     # Cleanup
@@ -30,7 +27,7 @@
 fi
 
 # Build in debug mode with tests
-./waf --color=yes configure --debug --with-tests $ASAN $COVERAGE $PCH
+./waf --color=yes configure --debug --with-tests $ASAN $COVERAGE
 ./waf --color=yes build
 
 # (tests will be run against the debug version)