remove cvc4

Author: Leo Alt

.circleci/config.yml

@@ -581,7 +581,7 @@ jobs:
       - run:
           name: Install build dependencies
           command: |
-            pacman --noconfirm -Syu --noprogressbar --needed base-devel boost cmake z3 cvc4 git openssh tar
+            pacman --noconfirm -Syu --noprogressbar --needed base-devel boost cmake z3 git openssh tar
       - checkout
       - run: *run_build
       - store_artifacts: *artifacts_solc
@@ -726,7 +726,7 @@ jobs:
         - run:
             name: Install runtime dependencies
             command: |
-              pacman --noconfirm -Syu --noprogressbar --needed base-devel boost cmake z3 cvc4 git openssh tar
+              pacman --noconfirm -Syu --noprogressbar --needed base-devel boost cmake z3 git openssh tar
         - checkout
         - attach_workspace:
             at: build
@@ -819,7 +819,7 @@ jobs:
           name: Install test dependencies
           command: |
             apt-get update
-            apt-get install -qqy --no-install-recommends nodejs npm cvc4
+            apt-get install -qqy --no-install-recommends nodejs npm
       - run:
           name: Test solcjs
           no_output_timeout: 30m

scripts/docker/buildpack-deps/Dockerfile.ubuntu2004

@@ -22,7 +22,7 @@
 # (c) 2016-2019 solidity contributors.
 #------------------------------------------------------------------------------
 FROM buildpack-deps:focal AS base
-LABEL version="6"
+LABEL version="7"
 
 ARG DEBIAN_FRONTEND=noninteractive
 
@@ -37,7 +37,7 @@ RUN set -ex; \
 		cmake ninja-build \
 		libboost-filesystem-dev libboost-test-dev libboost-system-dev \
 		libboost-program-options-dev \
-		libcvc4-dev libz3-static-dev \
+		libz3-static-dev \
 		; \
 	apt-get install -qy python3-pip python3-sphinx; \
 	pip3 install codecov; \